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.

A250782 Number of (n+1) X (7+1) 0..1 arrays with nondecreasing 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)
1 901
2 2326
3 5568
4 12796
5 28692
6 63184
7 137082
8 293588
9 621664
10 1303276
11 2708612
12 5587548
13 11454008
14 23356632
15 47422730
16 95949660
17 193592124
18 389742628
19 783299900
20 1572215204
21 3152596828
22 6316933760
23 12650561098
24 25324612868

List of values

[901, 2326, 5568, 12796, 28692, 63184, 137082, 293588, 621664, 1303276, 2708612, 5587548, 11454008, 23356632, 47422730, 95949660, 193592124, 389742628, 783299900, 1572215204, 3152596828, 6316933760, 12650561098, 25324612868]

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

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