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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.

A251369 Number of (n+1)X(4+1) 0..2 arrays with every 2X2 subblock summing to 1 2 3 4 5 6 or 7.

Table of values

n a(n)
1 53769
2 12002283
3 2676962017
4 597108952883
5 133187012365193
6 29707797738391051
7 6626420822196876929
8 1478044705717848217587
9 329682676296148787924297
10 73536792652326563411377515

List of values

[53769, 12002283, 2676962017, 597108952883, 133187012365193, 29707797738391051, 6626420822196876929, 1478044705717848217587, 329682676296148787924297, 73536792652326563411377515]

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

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