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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.

A320220 Number of multisets of nonempty words with a total of n letters over denary alphabet such that all letters occur at least once in the multiset.

Table of values

n a(n)
10 58941091
11 4143348470
12 162731313045
13 4718107140980
14 112729591991185
15 2351902614090062
16 44373396691290660
17 774761803780874980
18 12721776529833584465
19 198768703664184994530
20 2981185419002290273673
21 43212794112241851734090
22 608596903477972496493095

List of values

[58941091, 4143348470, 162731313045, 4718107140980, 112729591991185, 2351902614090062, 44373396691290660, 774761803780874980, 12721776529833584465, 198768703664184994530, 2981185419002290273673, 43212794112241851734090, 608596903477972496493095]

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

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