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.

A291451 Triangle read by rows, expansion of e.g.f. exp(x*(exp(z)/3 + 2*exp(-z/2)* cos(z*sqrt(3)/2)/3 - 1)), nonzero coefficients of z.

Table of values

n a(n)
0 1
1 0
2 1
3 0
4 1
5 10
6 0
7 1
8 84
9 280
10 0
11 1
12 682
13 9240
14 15400
15 0
16 1
17 5460
18 260260
19 1401400
20 1401400
21 0
22 1
23 43690
24 7128576
25 99379280
26 285885600
27 190590400
28 0
29 1
30 349524
31 193360720
32 6600492080
33 42549306800
34 76045569600
35 36212176000

List of values

[1, 0, 1, 0, 1, 10, 0, 1, 84, 280, 0, 1, 682, 9240, 15400, 0, 1, 5460, 260260, 1401400, 1401400, 0, 1, 43690, 7128576, 99379280, 285885600, 190590400, 0, 1, 349524, 193360720, 6600492080, 42549306800, 76045569600, 36212176000]