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.

A158834 A diagonal in the array A158825 of coefficients of successive iterations of x*C(x), where C(x) is the Catalan function (A000108).

Table of values

n a(n)
1 1
2 4
3 30
4 315
5 4200
6 67620
7 1273668
8 27454218
9 666200106
10 17968302638
11 533188477536
12 17261808531552
13 605452449574320
14 22870569475477112
15 925663441858807096
16 39964465820186753753
17 1833332492818402014474

List of values

[1, 4, 30, 315, 4200, 67620, 1273668, 27454218, 666200106, 17968302638, 533188477536, 17261808531552, 605452449574320, 22870569475477112, 925663441858807096, 39964465820186753753, 1833332492818402014474]

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

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