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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.

A320214 Number of multisets of nonempty words with a total of n letters over quaternary alphabet such that all letters occur at least once in the multiset.

Table of values

n a(n)
4 73
5 1028
6 9182
7 66584
8 428653
9 2557972
10 14496714
11 79179724
12 420817947
13 2190356332
14 11216217292
15 56689332604
16 283477764373
17 1404999644584
18 6911375241384
19 33778491898132
20 164157640596783
21 793799200891568
22 3821351207383146
23 18321693995577480
24 87520485093330489

List of values

[73, 1028, 9182, 66584, 428653, 2557972, 14496714, 79179724, 420817947, 2190356332, 11216217292, 56689332604, 283477764373, 1404999644584, 6911375241384, 33778491898132, 164157640596783, 793799200891568, 3821351207383146, 18321693995577480, 87520485093330489]

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

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