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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.

A320206 Number of sets of nonempty words with a total of n letters over quinary alphabet such that all letters occur at least once in the set.

Table of values

n a(n)
5 501
6 9945
7 121710
8 1185360
9 10096795
10 78808600
11 578849355
12 4067705855
13 27649153955
14 183168119565
15 1189058740200
16 7593928600995
17 47855567247145
18 298255270385350
19 1841612720379730
20 11281413505991390
21 68637389125392080
22 415119249476398580
23 2497526622600665470

List of values

[501, 9945, 121710, 1185360, 10096795, 78808600, 578849355, 4067705855, 27649153955, 183168119565, 1189058740200, 7593928600995, 47855567247145, 298255270385350, 1841612720379730, 11281413505991390, 68637389125392080, 415119249476398580, 2497526622600665470]

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

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