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The online encyclopaedia of integer sequences

https://oeis.org

by schappim • 8 years ago

11 3 8 years ago

OE

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3

laurentl• 8 years ago

OEIS is, to me, mind-boggling. When you consider that there is literally an infinite number of possible sequences, it’s amazing how often a completely arcane sequence you stumbled upon somewhere is listed in the OEIS.

Also, it’s helped me solve a few project Euler problems (which often involve framing “well-known” problems into novel forms). Brute-force the first few values and more often than not you’ll find the sequence in OEIS, sometimes with a generating function or pointers to the original problem.

dang• 8 years ago

Lots of previous discussions: https://hn.algolia.com/?query=integer%20sequences%20points%3...

chubasco• 8 years ago

Did anyone else immediately search 4, 8, 15, 16, 23, 42?

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