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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.

A195237 Number of lower triangles of a 7 X 7 0..n 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 268435456
2 1663418313
3 3601738548
4 5618308863
5 7640055854
6 9661943973
7 11683832092
8 13705720211
9 15727608330
10 17749496449
11 19771384568
12 21793272687
13 23815160806
14 25837048925
15 27858937044
16 29880825163
17 31902713282
18 33924601401

List of values

[268435456, 1663418313, 3601738548, 5618308863, 7640055854, 9661943973, 11683832092, 13705720211, 15727608330, 17749496449, 19771384568, 21793272687, 23815160806, 25837048925, 27858937044, 29880825163, 31902713282, 33924601401]

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

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