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.

A091620 Number of compositions (ordered partitions) of n such that some part is repeated consecutively 6 times and no part is repeated consecutively more than 6 times.

Table of values

n a(n)
6 1
7 0
8 2
9 4
10 9
11 20
12 45
13 98
14 210
15 453
16 971
17 2068
18 4387
19 9275
20 19545
21 41064
22 86055
23 179913
24 375338
25 781497
26 1624250
27 3370238
28 6982398
29 14445576
30 29846586
31 61591860
32 126956859
33 261411737
34 537723480
35 1105055809
36 2268948882
37 4654815069
38 9541957646
39 19545570684

List of values

[1, 0, 2, 4, 9, 20, 45, 98, 210, 453, 971, 2068, 4387, 9275, 19545, 41064, 86055, 179913, 375338, 781497, 1624250, 3370238, 6982398, 14445576, 29846586, 61591860, 126956859, 261411737, 537723480, 1105055809, 2268948882, 4654815069, 9541957646, 19545570684]

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

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