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2. List of integer sequences - Wikipedia

   en.wikipedia.org/wiki/List_of_integer_sequences

   "subtract if possible, otherwise add": a(0) = 0; for n > 0, a(n) = a(n − 1) − n if that number is positive and not already in the sequence, otherwise a(n) = a(n − 1) + n, whether or not that number is already in the sequence.

3. Recamán's sequence - Wikipedia

   en.wikipedia.org/wiki/Recamán's_sequence

   The most-common visualization of the Recamán's sequence is simply plotting its values, such as the figure at right. On January 14, 2018, the Numberphile YouTube channel published a video titled The Slightly Spooky Recamán Sequence , [ 3 ] showing a visualization using alternating semi-circles, as it is shown in the figure at top of this page.

4. Sequence - Wikipedia

   en.wikipedia.org/wiki/Sequence

   The set C = {0, 1} ∞ of all infinite binary sequences is sometimes called the Cantor space. An infinite binary sequence can represent a formal language (a set of strings) by setting the n th bit of the sequence to 1 if and only if the n th string (in shortlex order) is in the language.

5. Parity (mathematics) - Wikipedia

   en.wikipedia.org/wiki/Parity_(mathematics)

   That is, if the last digit is 1, 3, 5, 7, or 9, then it is odd; otherwise it is even—as the last digit of any even number is 0, 2, 4, 6, or 8. The same idea will work using any even base. In particular, a number expressed in the binary numeral system is odd if its last digit is 1; and it is even if its last digit is 0.

6. What are angel numbers? A guide to the numeric sequences and ...

   www.aol.com/angel-numbers-guide-numeric...

   Angel numbers are repeating number sequences, often used as guides for deeper spiritual exploration. Ranging from 000 to 999 , each sequence carries its own distinct meaning and energy.

7. Who's performing at tonight's Times Square ball drop to ring ...

   www.aol.com/whos-performing-tonights-times...

   The show will air from 8-10 p.m. EST/PST and 10:30 p.m.-1:30 a.m. EST/PST on CBS television stations and stream on Paramount+. The show will include over 40 performances. Here is a list of who's ...