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.

A377314 a(n) = coefficient of the term that is independent of 2^(1/3) and 2^(2/3) in the expansion of (1 + 2^(1/3) + 2^(2/3))^n.

Table of values

n a(n)
0 1
1 1
2 5
3 19
4 73
5 281
6 1081
7 4159
8 16001
9 61561
10 236845
11 911219
12 3505753
13 13487761
14 51891761
15 199644319
16 768096001
17 2955112721
18 11369270485
19 43741245619
20 168286661033
21 647452990441
22 2490960200041
23 9583526232479
24 36870912288001
25 141854275761481

List of values

[1, 1, 5, 19, 73, 281, 1081, 4159, 16001, 61561, 236845, 911219, 3505753, 13487761, 51891761, 199644319, 768096001, 2955112721, 11369270485, 43741245619, 168286661033, 647452990441, 2490960200041, 9583526232479, 36870912288001, 141854275761481]