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.

A250968 Number of (n+1)X(3+1) 0..1 arrays with no 2X2 subblock having the sum of its diagonal elements less than the absolute difference of its antidiagonal elements.

Table of values

n a(n)
1 172
2 1945
3 22048
4 249921
5 2833397
6 32124018
7 364210219
8 4129278507
9 46816221866
10 530784935436
11 6017842440934
12 68228062145830
13 773544424316648
14 8770159340495832
15 99432808820402153
16 1127332250873994176

List of values

[172, 1945, 22048, 249921, 2833397, 32124018, 364210219, 4129278507, 46816221866, 530784935436, 6017842440934, 68228062145830, 773544424316648, 8770159340495832, 99432808820402153, 1127332250873994176]

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

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