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.

A275185 Number of 5 X n 0..2 arrays with no element equal to any value at offset (-2,-1) (-1,0) or (-1,1) and new values introduced in order 0..2.

Table of values

n a(n)
1 8
2 21
3 85
4 353
5 1465
6 6081
7 25241
8 104769
9 434873
10 1805057
11 7492377
12 31099137
13 129085369
14 535803713
15 2223998105
16 9231305153
17 38317026745
18 159045174401
19 660159977241
20 2740172389249
21 11373826014393
22 47210138571457

List of values

[8, 21, 85, 353, 1465, 6081, 25241, 104769, 434873, 1805057, 7492377, 31099137, 129085369, 535803713, 2223998105, 9231305153, 38317026745, 159045174401, 660159977241, 2740172389249, 11373826014393, 47210138571457]

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

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