A202474 - cp's OEIS frontend

A202474 Coefficients of y^(n-1) in Product_{k=1..n} (1 + k*y + y^2) for n >= 1.

n	a(n)
1	1
2	3
3	14
4	80
5	539
6	4179
7	36630
8	358056
9	3860922
10	45519870
11	582466235
12	8038684290
13	119018991779
14	1881685721265
15	31638175704546
16	563703015007056
17	10609073237333432
18	210305960538762456
19	4379808881917047898
20	95604092878386437940
21	2182706554812339958778

[1, 3, 14, 80, 539, 4179, 36630, 358056, 3860922, 45519870, 582466235, 8038684290, 119018991779, 1881685721265, 31638175704546, 563703015007056, 10609073237333432, 210305960538762456, 4379808881917047898, 95604092878386437940, 2182706554812339958778]

cp's OEIS Frontend

A202474 Coefficients of y^(n-1) in Product_{k=1..n} (1 + k*y + y^2) for n >= 1.

Table of values

List of values