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.

A238251 Number of (n+1)X(4+1) 0..1 arrays with 2X2 subblock sums lexicographically nondecreasing columnwise and rowwise.

Table of values

n a(n)
1 286
2 2818
3 43456
4 523578
5 6683137
6 65450601
7 640472606
8 5080416791
9 40066932588
10 267891545518
11 1781590953402
12 10371478598345
13 60084341166190
14 311815187891138
15 1610762741432521
16 7583058204030841
17 35540971632237331

List of values

[286, 2818, 43456, 523578, 6683137, 65450601, 640472606, 5080416791, 40066932588, 267891545518, 1781590953402, 10371478598345, 60084341166190, 311815187891138, 1610762741432521, 7583058204030841, 35540971632237331]

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

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