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.

A373310 Expansion of g.f. A(x) satisfying A( A(x) - C(x) ) = x^2, where C(x) = x + C(x)^2 is the Catalan function (A000108).

Table of values

n a(n)
1 1
2 2
3 2
4 3
5 14
6 48
7 132
8 406
9 1430
10 4952
11 16796
12 58416
13 208012
14 744468
15 2674440
16 9688043
17 35357670
18 129674822
19 477638700
20 1767128768
21 6564120420
22 24466875156
23 91482563640
24 343056839170
25 1289904147324
26 4861959143296
27 18367353072152
28 69533492095732
29 263747951750360

List of values

[1, 2, 2, 3, 14, 48, 132, 406, 1430, 4952, 16796, 58416, 208012, 744468, 2674440, 9688043, 35357670, 129674822, 477638700, 1767128768, 6564120420, 24466875156, 91482563640, 343056839170, 1289904147324, 4861959143296, 18367353072152, 69533492095732, 263747951750360]

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

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