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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.

A195231 Number of lower triangles of an n X n 0..7 array with each element differing from all of its diagonal, vertical, antidiagonal and horizontal neighbors by one or less.

Table of values

n a(n)
1 8
2 50
3 610
4 14536
5 681942
6 63338492
7 11683832092
8 4290676097374
9 3142339851746238
10 4595720660886942892
11 13436641716584454488144
12 78603060373509486868646762
13 920680713893261032002755485080

List of values

[8, 50, 610, 14536, 681942, 63338492, 11683832092, 4290676097374, 3142339851746238, 4595720660886942892, 13436641716584454488144, 78603060373509486868646762, 920680713893261032002755485080]

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

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