cp's OEIS Frontend

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.

A124303 Number of set partitions of length <= 4; sum of first 4 columns of triangle of Stirling numbers of 2nd kind; dimension of space of symmetric polynomials in 4 noncommuting variables.

Table of values

n a(n)
0 1
1 1
2 2
3 5
4 15
5 51
6 187
7 715
8 2795
9 11051
10 43947
11 175275
12 700075
13 2798251
14 11188907
15 44747435
16 178973355
17 715860651
18 2863377067
19 11453377195
20 45813246635
21 183252462251
22 733008800427
23 2932033104555
24 11728128223915
25 46912504507051
26 187650001250987

List of values

[1, 1, 2, 5, 15, 51, 187, 715, 2795, 11051, 43947, 175275, 700075, 2798251, 11188907, 44747435, 178973355, 715860651, 2863377067, 11453377195, 45813246635, 183252462251, 733008800427, 2932033104555, 11728128223915, 46912504507051, 187650001250987]

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

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