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.

A319591 Number of nonnegative integer matrices with n columns and any number of nonzero distinct rows with every column summing to 3 up to permutation of rows.

Table of values

n a(n)
0 1
1 2
2 17
3 364
4 14595
5 937776
6 88507276
7 11584785137
8 2017129470049
9 452573312572094
10 127585778625167901
11 44275881599081757633
12 18594652294164085489646
13 9315786786179883210141889
14 5499383628157822564248546214
15 3784760890972848935690646794792

List of values

[1, 2, 17, 364, 14595, 937776, 88507276, 11584785137, 2017129470049, 452573312572094, 127585778625167901, 44275881599081757633, 18594652294164085489646, 9315786786179883210141889, 5499383628157822564248546214, 3784760890972848935690646794792]

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

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