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.

A129921 Number of generalized compositions of n: words b_1^{i_1}b_2^{i_2}...b_k^{i_k} such that b_j's and j_i's are positive integers and sum b_j*i_j = n.

Table of values

n a(n)
0 1
1 1
2 3
3 7
4 18
5 43
6 108
7 263
8 651
9 1599
10 3942
11 9698
12 23890
13 58805
14 144806
15 356512
16 877820
17 2161285
18 5321485
19 13102246
20 32259890
21 79428762
22 195566238
23 481514453
24 1185564348
25 2919044646
26 7187145712
27 17695877607
28 43570023304
29 107276219947
30 264130857268
31 650331536681
32 1601218102939

List of values

[1, 1, 3, 7, 18, 43, 108, 263, 651, 1599, 3942, 9698, 23890, 58805, 144806, 356512, 877820, 2161285, 5321485, 13102246, 32259890, 79428762, 195566238, 481514453, 1185564348, 2919044646, 7187145712, 17695877607, 43570023304, 107276219947, 264130857268, 650331536681, 1601218102939]

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

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