cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

A208099 Number of 4 X n nonnegative integer arrays with new values 0 upwards introduced in row major order and no element equal to any horizontal, diagonal or antidiagonal neighbor (colorings ignoring permutations of colors).

Table of values

n a(n)
0 1
1 15
2 500
3 192328
4 235862938
5 677352910013
6 3773408294000427
7 36179066767453804155
8 549736601190850705047301
9 12463226118187748082979153202
10 402612019211536786633308878052340
11 17870804510325656079748707416649732732
12 1058340866272922899343613575761029687845720

List of values

[1, 15, 500, 192328, 235862938, 677352910013, 3773408294000427, 36179066767453804155, 549736601190850705047301, 12463226118187748082979153202, 402612019211536786633308878052340, 17870804510325656079748707416649732732, 1058340866272922899343613575761029687845720]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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