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.

A201449 Number of nX6 0..3 arrays with every row and column nondecreasing rightwards and downwards, and the number of instances of each value within one of each other.

Table of values

n a(n)
1 6
2 13
3 701
4 846
5 22324
6 16334
7 363693
8 211755
9 3708666
10 1743841
11 27486101
12 11523462
13 159251638
14 59366033
15 763865999
16 265448264
17 3148137956
18 1014298362
19 11451837500
20 3516665645
21 37535616517
22 10943450873
23 112627454165
24 31695873391

List of values

[6, 13, 701, 846, 22324, 16334, 363693, 211755, 3708666, 1743841, 27486101, 11523462, 159251638, 59366033, 763865999, 265448264, 3148137956, 1014298362, 11451837500, 3516665645, 37535616517, 10943450873, 112627454165, 31695873391]

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

Content is available under The OEIS End-User License Agreement.