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.

A274727 Number of nX7 0..2 arrays with no element equal to any value at offset (-1,-2) (-2,-1) or (-1,0) and new values introduced in order 0..2.

Table of values

n a(n)
1 365
2 6144
3 25268
4 421904
5 7016284
6 116633012
7 1980677448
8 33415073716
9 564905405336
10 9541460598408
11 161295215603556
12 2725041270964876
13 46055189349633552
14 778212220006487596
15 13151212573069796840

List of values

[365, 6144, 25268, 421904, 7016284, 116633012, 1980677448, 33415073716, 564905405336, 9541460598408, 161295215603556, 2725041270964876, 46055189349633552, 778212220006487596, 13151212573069796840]

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

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