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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.

A195002 Number of lower triangles of a 6 X 6 0..n array with each element differing from all of its horizontal and vertical neighbors by one.

Table of values

n a(n)
1 2
2 4608
3 31042
4 81014
5 138956
6 199988
7 261324
8 322806
9 384292
10 445780
11 507268
12 568756
13 630244
14 691732
15 753220
16 814708
17 876196
18 937684
19 999172
20 1060660
21 1122148
22 1183636
23 1245124
24 1306612
25 1368100
26 1429588
27 1491076
28 1552564
29 1614052
30 1675540

List of values

[2, 4608, 31042, 81014, 138956, 199988, 261324, 322806, 384292, 445780, 507268, 568756, 630244, 691732, 753220, 814708, 876196, 937684, 999172, 1060660, 1122148, 1183636, 1245124, 1306612, 1368100, 1429588, 1491076, 1552564, 1614052, 1675540]

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

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