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.

A275132 Number of 3 X n 0..2 arrays with no element equal to any value at offset (-2,-2) (-1,0) or (-1,1) and new values introduced in order 0..2.

Table of values

n a(n)
1 2
2 12
3 45
4 174
5 675
6 2607
7 10077
8 38967
9 150651
10 582435
11 2251827
12 8706015
13 33659139
14 130132935
15 503119779
16 1945160703
17 7520376939
18 29075268471
19 112410752211
20 434602254687
21 1680258482619
22 6496212425799
23 25115645192451
24 97102063806447

List of values

[2, 12, 45, 174, 675, 2607, 10077, 38967, 150651, 582435, 2251827, 8706015, 33659139, 130132935, 503119779, 1945160703, 7520376939, 29075268471, 112410752211, 434602254687, 1680258482619, 6496212425799, 25115645192451, 97102063806447]

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

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