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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.

A254243 Number of ways to partition the multiset consisting of 3 copies each of 1, 2, ..., n into n sets of size 3.

Table of values

n a(n)
0 1
1 1
2 2
3 10
4 93
5 1417
6 32152
7 1016489
8 42737945
9 2307295021
10 155607773014
11 12823004639504
12 1267907392540573
13 148160916629902965
14 20199662575448858212
15 3177820001990224608763
16 571395567211112572679633
17 116448309072281063992943561
18 26700057600529091443246943530

List of values

[1, 1, 2, 10, 93, 1417, 32152, 1016489, 42737945, 2307295021, 155607773014, 12823004639504, 1267907392540573, 148160916629902965, 20199662575448858212, 3177820001990224608763, 571395567211112572679633, 116448309072281063992943561, 26700057600529091443246943530]

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

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