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.

A106357 Number of compositions of n with exactly 1 adjacent equal pair of parts.

Table of values

n a(n)
2 1
3 0
4 3
5 6
6 7
7 20
8 42
9 72
10 141
11 280
12 516
13 976
14 1853
15 3420
16 6361
17 11844
18 21819
19 40192
20 73942
21 135452
22 247828
23 452776
24 825252
25 1501998
26 2730159
27 4954890
28 8981360
29 16261568
30 29408708
31 53130154
32 95894384
33 172917788
34 311538169
35 560831286

List of values

[1, 0, 3, 6, 7, 20, 42, 72, 141, 280, 516, 976, 1853, 3420, 6361, 11844, 21819, 40192, 73942, 135452, 247828, 452776, 825252, 1501998, 2730159, 4954890, 8981360, 16261568, 29408708, 53130154, 95894384, 172917788, 311538169, 560831286]

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

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