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.

A204650 Number of (n+1) X 8 0..1 arrays with column and row pair sums b(i,j)=a(i,j)+a(i,j-1) and c(i,j)=a(i,j)+a(i-1,j) nondecreasing in column and row directions, respectively.

Table of values

n a(n)
1 216
2 283
3 637
4 1478
5 3261
6 6780
7 13314
8 24862
9 44426
10 76378
11 126906
12 204583
13 321038
14 491781
15 737163
16 1083525
17 1564519
18 2222657
19 3111073
20 4295556
21 5856841
22 7893218
23 10523448
24 13890048
25 18162936
26 23543500
27 30269084
28 38617957
29 48914760
30 61536499

List of values

[216, 283, 637, 1478, 3261, 6780, 13314, 24862, 44426, 76378, 126906, 204583, 321038, 491781, 737163, 1083525, 1564519, 2222657, 3111073, 4295556, 5856841, 7893218, 10523448, 13890048, 18162936, 23543500, 30269084, 38617957, 48914760, 61536499]

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

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