A304403 - cp's OEIS frontend

A304403 G.f. A(x) satisfies: [x^n] A(x) * (1+x)^(n(n-1)/2) = [x^n] (1+x)^(n(n+1)/2) for n >= 0.

n	a(n)
0	1
1	1
2	2
3	10
4	85
5	1001
6	15036
7	273932
8	5858560
9	143735650
10	3976623010
11	122427035732
12	4150101179665
13	153570442058684
14	6158890134498661
15	266074435570524219
16	12318188650382356297
17	608375312208623381681
18	31927089332971578025902
19	1774159611825531210120848
20	104068978022940760659203857
21	6425920321260029677988702979
22	416624218261246444665784515673

[1, 1, 2, 10, 85, 1001, 15036, 273932, 5858560, 143735650, 3976623010, 122427035732, 4150101179665, 153570442058684, 6158890134498661, 266074435570524219, 12318188650382356297, 608375312208623381681, 31927089332971578025902, 1774159611825531210120848, 104068978022940760659203857, 6425920321260029677988702979, 416624218261246444665784515673]

cp's OEIS Frontend

A304403 G.f. A(x) satisfies: [x^n] A(x) * (1+x)^(n(n-1)/2) = [x^n] (1+x)^(n(n+1)/2) for n >= 0.

Table of values

List of values

cp's OEIS Frontend

A304403 G.f. A(x) satisfies: [x^n] A(x) * (1+x)^(n*(n-1)/2) = [x^n] (1+x)^(n*(n+1)/2) for n >= 0.

Table of values

List of values

A304403 G.f. A(x) satisfies: [x^n] A(x) * (1+x)^(n(n-1)/2) = [x^n] (1+x)^(n(n+1)/2) for n >= 0.