A344495 - cp's OEIS frontend

A344495 a(0)=1; for n>0 a(n)=(a(n-1) + n) * n if n is odd, a(n-1)*n + n otherwise.

n	a(n)
0	1
1	2
2	6
3	27
4	112
5	585
6	3516
7	24661
8	197296
9	1775745
10	17757460
11	195332181
12	2343986184
13	30471820561
14	426605487868
15	6399082318245
16	102385317091936
17	1740550390563201
18	31329907030137636
19	595268233572615445
20	11905364671452308920
21	250012658100498487761
22	5500278478210966730764

[1, 2, 6, 27, 112, 585, 3516, 24661, 197296, 1775745, 17757460, 195332181, 2343986184, 30471820561, 426605487868, 6399082318245, 102385317091936, 1740550390563201, 31329907030137636, 595268233572615445, 11905364671452308920, 250012658100498487761, 5500278478210966730764]

cp's OEIS Frontend

A344495 a(0)=1; for n>0 a(n)=(a(n-1) + n) * n if n is odd, a(n-1)*n + n otherwise.

Table of values

List of values