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.

A254451 Number of (n+2)X(2+2) 0..1 arrays with every 3X3 subblock diagonal maximum minus antidiagonal median nondecreasing horizontally and vertically.

Table of values

n a(n)
1 3036
2 26380
3 196684
4 1279568
5 8004340
6 48345120
7 289945200
8 1735438880
9 10399188560
10 62416180384
11 375009286716
12 2254540612636
13 13558023603848
14 81542178909476
15 490442432067776
16 2949842103362336
17 17742389731217108

List of values

[3036, 26380, 196684, 1279568, 8004340, 48345120, 289945200, 1735438880, 10399188560, 62416180384, 375009286716, 2254540612636, 13558023603848, 81542178909476, 490442432067776, 2949842103362336, 17742389731217108]

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

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