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.

A049447 Stirling numbers of second kind: 9th column of Stirling2 triangle A008277.

Table of values

n a(n)
9 1
10 45
11 1155
12 22275
13 359502
14 5135130
15 67128490
16 820784250
17 9528822303
18 106175395755
19 1144614626805
20 12011282644725
21 123272476465204
22 1241963303533920
23 12320068811796900
24 120622574326072500
25 1167921451092973005
26 11201516780955125625
27 106563273280541795575

List of values

[1, 45, 1155, 22275, 359502, 5135130, 67128490, 820784250, 9528822303, 106175395755, 1144614626805, 12011282644725, 123272476465204, 1241963303533920, 12320068811796900, 120622574326072500, 1167921451092973005, 11201516780955125625, 106563273280541795575]

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

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