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.

A203576 Exponential (or binomial) half-convolution of A000984 (central binomial) with itself.

Table of values

n a(n)
0 1
1 2
2 14
3 56
4 446
5 2152
6 18248
7 97120
8 848254
9 4796552
10 42454664
11 250140640
12 2226532712
13 13516860320
14 120553738144
15 748819997056
16 6679690686334
17 42254745008840
18 376638926040392
19 2418457241945056
20 21530200591563496
21 139992790135717792
22 1244418656720926624
23 8178446389043428736

List of values

[1, 2, 14, 56, 446, 2152, 18248, 97120, 848254, 4796552, 42454664, 250140640, 2226532712, 13516860320, 120553738144, 748819997056, 6679690686334, 42254745008840, 376638926040392, 2418457241945056, 21530200591563496, 139992790135717792, 1244418656720926624, 8178446389043428736]

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

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