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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.

A327827 Sum of multinomials M(n; lambda), where lambda ranges over all partitions of n into parts incorporating 1.

Table of values

n a(n)
0 0
1 1
2 2
3 9
4 40
5 235
6 1476
7 11214
8 91848
9 859527
10 8710300
11 97675138
12 1179954612
13 15490520786
14 217602374458
15 3280028076615
16 52571985879600
17 895913825750191
18 16140560853800556
19 307048409240931810
20 6143666813617775100
21 129096480664676773542
22 2840750997343361802150

List of values

[0, 1, 2, 9, 40, 235, 1476, 11214, 91848, 859527, 8710300, 97675138, 1179954612, 15490520786, 217602374458, 3280028076615, 52571985879600, 895913825750191, 16140560853800556, 307048409240931810, 6143666813617775100, 129096480664676773542, 2840750997343361802150]

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

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