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.

A250817 Number of (5+1) X (n+1) 0..2 arrays with nondecreasing x(i,j)-x(i,j-1) in the i direction and nondecreasing min(x(i,j),x(i-1,j)) in the j direction.

Table of values

n a(n)
1 4356
2 13735
3 32745
4 66291
5 120304
6 201741
7 318585
8 479845
9 695556
10 976779
11 1335601
12 1785135
13 2339520
14 3013921
15 3824529
16 4788561
17 5924260
18 7250895
19 8788761
20 10559179
21 12584496
22 14888085
23 17494345
24 20428701
25 23717604
26 27388531
27 31469985

List of values

[4356, 13735, 32745, 66291, 120304, 201741, 318585, 479845, 695556, 976779, 1335601, 1785135, 2339520, 3013921, 3824529, 4788561, 5924260, 7250895, 8788761, 10559179, 12584496, 14888085, 17494345, 20428701, 23717604, 27388531, 31469985]

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

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