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The John Riordan prize for the best solution to an unsolved problem in the OEIS
via aperiodical

As mentioned previously, the Encyclopedia of Integer Sequences is 50 this year. To celebrate that fact, and to encourage readers to concentrate on filling in the gaps in the missing entries instead of just adding new ones, there’s a \$1,000 prize for...
Graph makeover: Fractal scatterplot
via blogs.sas

One of the marvels of the Internet is the Online Encyclopedia of Integer Sequences (OEIS). Started 50 years ago by Neil J. A. Sloane (pic) as a graduate student, the repository now contains more than 256,000 integer sequences run by a non-profit OEIS...
Plots of 1000 sequences from the Online Encyclopedia of Integer...
via reproduct1on.tumblr

Plots of 1000 sequences from the Online Encyclopedia of Integer Sequences (OEIS) shown at the rate of 2 sequences per second. The audio was generated from Recaman’s sequence (A005132, the last sequence plotted). The plots become wilder as the movie...

Oeis.org popular pages

A036468 - OEIS

A036468 Individual edits: COMMENTS Records in a(n) are for 2n+1 = 3, 5, 11, 15, 25, 35, 55, 65, 85, 125, 145, 185, 205, 215, 235, 265, 295, 325,...
A274916 - OEIS

A274916 Triangle T(n, k) read by rows: sum of residues p^(q-1) (mod q^2) and q^(p-1) (mod p^2), where p = prime(n) and q = prime(k) for ...

The On-Line Encyclopedia of Integer Sequences® (OEIS®)

The On-Line Encyclopedia of Integer Sequences® (OEIS®) For more information about the Encyclopedia, see the Welcome page.