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.

A258398 Number of 2n-length strings of balanced parentheses of exactly 10 different types that are introduced in ascending order.

Table of values

n a(n)
10 16796
11 3233230
12 354660460
13 29214542500
14 2013190058880
15 122762429039250
16 6850724997273300
17 357603651626578500
18 17726205673051976100
19 843509478504416874150
20 38843740303576863755100
21 1741683387026398566250500
22 76401095775145069217992560

List of values

[16796, 3233230, 354660460, 29214542500, 2013190058880, 122762429039250, 6850724997273300, 357603651626578500, 17726205673051976100, 843509478504416874150, 38843740303576863755100, 1741683387026398566250500, 76401095775145069217992560]

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

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