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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.

A237385 Number of (n+1)X(1+1) 0..2 arrays colored with the maximum plus the upper median minus the minimum of every 2X2 subblock.

Table of values

n a(n)
1 81
2 434
3 2336
4 12624
5 68064
6 366568
7 1976940
8 10657560
9 57441532
10 309578264
11 1668794652
12 8995139000
13 48484851148
14 261335232440
15 1408647749404
16 7592807398296
17 40926289471308
18 220597727495896
19 1189054017281884

List of values

[81, 434, 2336, 12624, 68064, 366568, 1976940, 10657560, 57441532, 309578264, 1668794652, 8995139000, 48484851148, 261335232440, 1408647749404, 7592807398296, 40926289471308, 220597727495896, 1189054017281884]

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

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