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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.

A306295 Maximal number of coalescent histories among non-matching pairs consisting of a caterpillar gene tree and a caterpillar species tree with n+2 leaves.

Table of values

n a(n)
1 1
2 3
3 10
4 32
5 107
6 359
7 1234
8 4274
9 15032
10 53242
11 190588
12 686272
13 2490399
14 9081375
15 33312770
16 122692130
17 453999656
18 1685601038
19 6282014804
20 23478897364
21 88026769844
22 330831420218
23 1246635155180
24 4707414286652
25 17815452662152
26 67546709440004
27 256595322436760

List of values

[1, 3, 10, 32, 107, 359, 1234, 4274, 15032, 53242, 190588, 686272, 2490399, 9081375, 33312770, 122692130, 453999656, 1685601038, 6282014804, 23478897364, 88026769844, 330831420218, 1246635155180, 4707414286652, 17815452662152, 67546709440004, 256595322436760]

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

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