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.

A377065 Number of 3 X n 0..2 matrices with row sums n and column sums 3 up to permutations of rows.

Table of values

n a(n)
0 1
1 1
2 2
3 6
4 30
5 166
6 981
7 5937
8 36646
9 229350
10 1451757
11 9274057
12 59699729
13 386798777
14 2520034050
15 16497343046
16 108454221206
17 715629888822
18 4737625385061
19 31456633327905
20 209418369288865
21 1397521222483385
22 9346484009527370
23 62632803958053870
24 420481623373564025

List of values

[1, 1, 2, 6, 30, 166, 981, 5937, 36646, 229350, 1451757, 9274057, 59699729, 386798777, 2520034050, 16497343046, 108454221206, 715629888822, 4737625385061, 31456633327905, 209418369288865, 1397521222483385, 9346484009527370, 62632803958053870, 420481623373564025]

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

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