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.

A372216 Product of n-th Pell number and n-th Catalan number: a(n) = A000129(n)*A000108(n).

Table of values

n a(n)
1 1
2 4
3 25
4 168
5 1218
6 9240
7 72501
8 583440
9 4789070
10 39940888
11 337490426
12 2883046320
13 24858176900
14 216046612080
15 1890737146125
16 16647522481440
17 147365806700310
18 1310740896927000
19 11708311265437710
20 104989351441019760

List of values

[1, 4, 25, 168, 1218, 9240, 72501, 583440, 4789070, 39940888, 337490426, 2883046320, 24858176900, 216046612080, 1890737146125, 16647522481440, 147365806700310, 1310740896927000, 11708311265437710, 104989351441019760]

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

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