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.

A275127 Number of nX4 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 14
2 64
3 174
4 568
5 2178
6 8321
7 31772
8 121707
9 466252
10 1783920
11 6825273
12 26122839
13 99981686
14 382636173
15 1464403303
16 5604594713
17 21449747744
18 82091326930
19 314176968483
20 1202409074708
21 4601819411125
22 17611921823170
23 67403757335393

List of values

[14, 64, 174, 568, 2178, 8321, 31772, 121707, 466252, 1783920, 6825273, 26122839, 99981686, 382636173, 1464403303, 5604594713, 21449747744, 82091326930, 314176968483, 1202409074708, 4601819411125, 17611921823170, 67403757335393]

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

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