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.

A206464 Number of length-n Catalan-RGS (restricted growth strings) such that the RGS is a valid mixed-radix number in falling factorial basis.

Table of values

n a(n)
0 1
1 1
2 2
3 4
4 10
5 26
6 74
7 218
8 672
9 2126
10 6908
11 22876
12 77100
13 263514
14 911992
15 3189762
16 11261448
17 40083806
18 143713968
19 518594034
20 1882217168
21 6867064856
22 25172021144
23 92666294090
24 342467464612
25 1270183943200
26 4726473541216
27 17640820790092
28 66025467919972

List of values

[1, 1, 2, 4, 10, 26, 74, 218, 672, 2126, 6908, 22876, 77100, 263514, 911992, 3189762, 11261448, 40083806, 143713968, 518594034, 1882217168, 6867064856, 25172021144, 92666294090, 342467464612, 1270183943200, 4726473541216, 17640820790092, 66025467919972]

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

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