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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.

A173781 a(n) is the smallest entry of the n-th column of the matrix of Super Catalan numbers S(m,n).

Table of values

n a(n)
0 1
1 2
2 4
3 10
4 28
5 72
6 198
7 572
8 1560
9 4420
10 12920
11 36176
12 104006
13 305900
14 869400
15 2521260
16 7443720
17 21360240
18 62300700
19 184410072
20 532740208
21 1560167752
22 4626704368
23 13432367520
24 39457579590
25 117177054540
26 341487416088
27 1005490725148
28 2989296750440
29 8737944347440
30 25776935824948

List of values

[1, 2, 4, 10, 28, 72, 198, 572, 1560, 4420, 12920, 36176, 104006, 305900, 869400, 2521260, 7443720, 21360240, 62300700, 184410072, 532740208, 1560167752, 4626704368, 13432367520, 39457579590, 117177054540, 341487416088, 1005490725148, 2989296750440, 8737944347440, 25776935824948]

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

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