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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.

A317178 Total number of colors summed over all collections of nonempty multisets with a total of n objects having color set {1,...,k} for some k <= n.

Table of values

n a(n)
0 0
1 1
2 6
3 34
4 210
5 1378
6 9726
7 73314
8 588846
9 5018290
10 45216798
11 429290178
12 4281260386
13 44724792130
14 488185773782
15 5555082575762
16 65760600166734
17 808339570702354
18 10299822335353654
19 135828836289073570
20 1851208197237464530
21 26040184250745321058

List of values

[0, 1, 6, 34, 210, 1378, 9726, 73314, 588846, 5018290, 45216798, 429290178, 4281260386, 44724792130, 488185773782, 5555082575762, 65760600166734, 808339570702354, 10299822335353654, 135828836289073570, 1851208197237464530, 26040184250745321058]

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

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