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.

A052366 Number of nonnegative integer 4 X 4 matrices with sum of elements equal to n, under row and column permutations.

Table of values

n a(n)
0 1
1 1
2 4
3 10
4 33
5 78
6 224
7 549
8 1403
9 3292
10 7677
11 16934
12 36581
13 75732
14 152949
15 298784
16 569636
17 1056500
18 1916502
19 3396630
20 5901524
21 10051384
22 16820192
23 27664756
24 44795247
25 71442327
26 112366941
27 174384376
28 267289440
29 404838044
30 606375995

List of values

[1, 1, 4, 10, 33, 78, 224, 549, 1403, 3292, 7677, 16934, 36581, 75732, 152949, 298784, 569636, 1056500, 1916502, 3396630, 5901524, 10051384, 16820192, 27664756, 44795247, 71442327, 112366941, 174384376, 267289440, 404838044, 606375995]

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

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