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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.

A244715 Number of compositions of n with exactly 3 transitions between different parts.

Table of values

n a(n)
6 2
7 10
8 36
9 86
10 200
11 374
12 680
13 1122
14 1796
15 2694
16 3954
17 5600
18 7752
19 10448
20 13798
21 18072
22 23032
23 29218
24 36390
25 45044
26 54870
27 66852
28 79790
29 95550
30 112662
31 132938
32 154752
33 180614
34 207764
35 239784
36 273898
37 312922
38 354240
39 401826
40 451598
41 508134
42 567756
43 634634
44 705506

List of values

[2, 10, 36, 86, 200, 374, 680, 1122, 1796, 2694, 3954, 5600, 7752, 10448, 13798, 18072, 23032, 29218, 36390, 45044, 54870, 66852, 79790, 95550, 112662, 132938, 154752, 180614, 207764, 239784, 273898, 312922, 354240, 401826, 451598, 508134, 567756, 634634, 705506]

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

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