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.

A055113 Number of bracketings of 0^0^0^...^0, with n 0's, giving the result 0, with conventions that 0^0 = 1^0 = 1^1 = 1, 0^1 = 0.

Table of values

n a(n)
0 0
1 1
2 0
3 1
4 1
5 5
6 11
7 41
8 120
9 421
10 1381
11 4840
12 16721
13 59357
14 210861
15 759071
16 2744393
17 10000437
18 36609977
19 134750450
20 498016753
21 1848174708
22 6882643032
23 25715836734
24 96365606679
25 362102430069
26 1364028272451
27 5150156201026
28 19486989838057
29 73880877535315

List of values

[0, 1, 0, 1, 1, 5, 11, 41, 120, 421, 1381, 4840, 16721, 59357, 210861, 759071, 2744393, 10000437, 36609977, 134750450, 498016753, 1848174708, 6882643032, 25715836734, 96365606679, 362102430069, 1364028272451, 5150156201026, 19486989838057, 73880877535315]

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

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