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.

A330457 Number of multisets of nonempty multisets of nonempty sets of positive integers with total sum n.

Table of values

n a(n)
0 1
1 1
2 3
3 7
4 17
5 37
6 87
7 187
8 414
9 887
10 1903
11 4008
12 8437
13 17519
14 36255
15 74384
16 151898
17 308129
18 622269
19 1249768
20 2499392
21 4975421
22 9865122
23 19481300
24 38331536
25 75149380
26 146840801
27 285990797
28 555297342
29 1074996017
30 2075201544
31 3995079507
32 7671034324
33 14692086594

List of values

[1, 1, 3, 7, 17, 37, 87, 187, 414, 887, 1903, 4008, 8437, 17519, 36255, 74384, 151898, 308129, 622269, 1249768, 2499392, 4975421, 9865122, 19481300, 38331536, 75149380, 146840801, 285990797, 555297342, 1074996017, 2075201544, 3995079507, 7671034324, 14692086594]

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

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