A156220 - cp's OEIS frontend

A156220 Triangle T(n, k) = (2^k/3)Q(k, n), with T(0, 0) = -2, where Q(k, n) = (1/2)( -Q(k-1, n) + 3*p(2, k-1)^n), and p(q, n) = Product_{j=1..n} ( (1-x^k)/(1-x) ), read by rows.

n	a(n)
0	-2
1	-2
2	3
3	-2
4	3
5	-1
6	-2
7	3
8	-1
9	109
10	-2
11	3
12	-1
13	325
14	1555523
15	-2
16	3
17	-1
18	973
19	32671835
20	49621794478165
21	-2
22	3
23	-1
24	2917
25	686126051
26	15630874866123949
27	27744919164118690798376051
28	-2
29	3
30	-1
31	8749
32	14408699579
33	4923725784550050421
34	270929135785330782929292449579
35	2134369240927848351630724472718209102550421

[-2, -2, 3, -2, 3, -1, -2, 3, -1, 109, -2, 3, -1, 325, 1555523, -2, 3, -1, 973, 32671835, 49621794478165, -2, 3, -1, 2917, 686126051, 15630874866123949, 27744919164118690798376051, -2, 3, -1, 8749, 14408699579, 4923725784550050421, 270929135785330782929292449579, 2134369240927848351630724472718209102550421]

cp's OEIS Frontend

A156220 Triangle T(n, k) = (2^k/3)Q(k, n), with T(0, 0) = -2, where Q(k, n) = (1/2)( -Q(k-1, n) + 3*p(2, k-1)^n), and p(q, n) = Product_{j=1..n} ( (1-x^k)/(1-x) ), read by rows.

Table of values

List of values

cp's OEIS Frontend

A156220 Triangle T(n, k) = (2^k/3)*Q(k, n), with T(0, 0) = -2, where Q(k, n) = (1/2)*( -Q(k-1, n) + 3*p(2, k-1)^n), and p(q, n) = Product_{j=1..n} ( (1-x^k)/(1-x) ), read by rows.

Table of values

List of values

A156220 Triangle T(n, k) = (2^k/3)Q(k, n), with T(0, 0) = -2, where Q(k, n) = (1/2)( -Q(k-1, n) + 3*p(2, k-1)^n), and p(q, n) = Product_{j=1..n} ( (1-x^k)/(1-x) ), read by rows.