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.

A250796 Number of (n+1)X(7+1) 0..1 arrays with nondecreasing min(x(i,j),x(i,j-1)) in the i direction and nondecreasing absolute value of x(i,j)-x(i-1,j) in the j direction.

Table of values

n a(n)
1 1102
2 3868
3 13598
4 48600
5 177142
6 653880
7 2437366
8 9144752
9 34478398
10 130446176
11 494830430
12 1880740552
13 7158985446
14 27281746344
15 104059447110
16 397187462784
17 1516879760334
18 5795614884304
19 22151486206382
20 84689884626136

List of values

[1102, 3868, 13598, 48600, 177142, 653880, 2437366, 9144752, 34478398, 130446176, 494830430, 1880740552, 7158985446, 27281746344, 104059447110, 397187462784, 1516879760334, 5795614884304, 22151486206382, 84689884626136]

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

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