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.

A203375 Number of (n+1)X6 0..1 arrays with every 2X2 subblock having equal diagonal elements or equal antidiagonal elements.

Table of values

n a(n)
1 972
2 15564
3 253068
4 4136292
5 67731264
6 1109832180
7 18189909480
8 298154846436
9 4887277903812
10 80111933563464
11 1313194979326320
12 21525927546323460
13 352853780193705264
14 5783993041849734792
15 94811448308361126864

List of values

[972, 15564, 253068, 4136292, 67731264, 1109832180, 18189909480, 298154846436, 4887277903812, 80111933563464, 1313194979326320, 21525927546323460, 352853780193705264, 5783993041849734792, 94811448308361126864]

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

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