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.

A215931 Product of Fibonacci and Catalan numbers: a(n) = A000045(2*n+2)*A000108(n).

Table of values

n a(n)
0 1
1 3
2 16
3 105
4 770
5 6048
6 49764
7 423423
8 3695120
9 32891430
10 297473956
11 2725789248
12 25251200716
13 236101791900
14 2225241057600
15 21118368117105
16 201640796593290
17 1935642349666080
18 18670022226540300
19 180851385211254450
20 1758621701183524320
21 17160853351737885660

List of values

[1, 3, 16, 105, 770, 6048, 49764, 423423, 3695120, 32891430, 297473956, 2725789248, 25251200716, 236101791900, 2225241057600, 21118368117105, 201640796593290, 1935642349666080, 18670022226540300, 180851385211254450, 1758621701183524320, 17160853351737885660]

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

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