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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.

A144508 a(n) = total number of partitions of [1, 2, ..., k] into exactly n blocks, each of size 1, 2, 3 or 4, for 0 <= k <= 4n.

Table of values

n a(n)
0 1
1 4
2 121
3 18252
4 7958726
5 7528988476
6 13130817809439
7 38001495237579931
8 169490425291053577442
9 1102725620990181693266071
10 10030550674270068548738783696
11 123317200510025161580777179001154
12 1993320784474917266370637900936051186
13 41401645296339316791633672053851083955147

List of values

[1, 4, 121, 18252, 7958726, 7528988476, 13130817809439, 38001495237579931, 169490425291053577442, 1102725620990181693266071, 10030550674270068548738783696, 123317200510025161580777179001154, 1993320784474917266370637900936051186, 41401645296339316791633672053851083955147]

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

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