A128814 - cp's OEIS frontend

A128814 a(0)=1, a(n)= Product_{k=1..n} k*(k+1)/2+1.

n	a(n)
0	1
1	2
2	8
3	56
4	616
5	9856
6	216832
7	6288128
8	232660736
9	10702393856
10	599334055936
11	40155381747712
12	3172275158069248
13	291849314542370816
14	30936027341491306496
15	3743259308320448086016
16	512826525239901387784192
17	78975284886944813718765568
18	13583749000554507959627677696
19	2594496059105911020288886439936

[1, 2, 8, 56, 616, 9856, 216832, 6288128, 232660736, 10702393856, 599334055936, 40155381747712, 3172275158069248, 291849314542370816, 30936027341491306496, 3743259308320448086016, 512826525239901387784192, 78975284886944813718765568, 13583749000554507959627677696, 2594496059105911020288886439936]

cp's OEIS Frontend

A128814 a(0)=1, a(n)= Product_{k=1..n} k*(k+1)/2+1.

Table of values

List of values