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.

A275126 Number of n X 3 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 5
2 16
3 45
4 129
5 373
6 1083
7 3148
8 9157
9 26623
10 77372
11 224857
12 653525
13 1899462
14 5520787
15 16046124
16 46637722
17 135551305
18 393976458
19 1145083415
20 3328158969
21 9673218248
22 28114986916
23 81715561920
24 237504397813
25 690301064559

List of values

[5, 16, 45, 129, 373, 1083, 3148, 9157, 26623, 77372, 224857, 653525, 1899462, 5520787, 16046124, 46637722, 135551305, 393976458, 1145083415, 3328158969, 9673218248, 28114986916, 81715561920, 237504397813, 690301064559]

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

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