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.

A204712 Number of (n+1) X 8 0..1 arrays with the permanents of all 2 X 2 subblocks equal and nonzero.

Table of values

n a(n)
1 385
2 3473
3 28161
4 239425
5 1992321
6 16748161
7 140090241
8 1174759297
9 9838208513
10 82449830017
11 690711971457
12 5787565930753
13 48489078457729
14 406275347589249
15 3403932556101121
16 28520064001053825
17 238954333647573121

List of values

[385, 3473, 28161, 239425, 1992321, 16748161, 140090241, 1174759297, 9838208513, 82449830017, 690711971457, 5787565930753, 48489078457729, 406275347589249, 3403932556101121, 28520064001053825, 238954333647573121]

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

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