A077138 - cp's OEIS frontend

A077138 a(0) = 0. If n is odd, a(n) = a(n-1) + n, otherwise a(n) = a(n-1) * n.

n	a(n)
0	0
1	1
2	2
3	5
4	20
5	25
6	150
7	157
8	1256
9	1265
10	12650
11	12661
12	151932
13	151945
14	2127230
15	2127245
16	34035920
17	34035937
18	612646866
19	612646885
20	12252937700
21	12252937721
22	269564629862
23	269564629885
24	6469551117240
25	6469551117265
26	168208329048890

[0, 1, 2, 5, 20, 25, 150, 157, 1256, 1265, 12650, 12661, 151932, 151945, 2127230, 2127245, 34035920, 34035937, 612646866, 612646885, 12252937700, 12252937721, 269564629862, 269564629885, 6469551117240, 6469551117265, 168208329048890]

cp's OEIS Frontend

A077138 a(0) = 0. If n is odd, a(n) = a(n-1) + n, otherwise a(n) = a(n-1) * n.

Table of values

List of values