A184390 - cp's OEIS frontend

A184390 a(n) = sum of numbers from 1 to pi(n), where pi(n) = A007955(n).

n	a(n)
1	1
2	3
3	6
4	36
5	15
6	666
7	28
8	2080
9	378
10	5050
11	66
12	1493856
13	91
14	19306
15	25425
16	524800
17	153
18	17009028
19	190
20	32004000
21	97461
22	117370
23	276
24	55037822976
25	7875
26	228826
27	266085
28	240956128
29	435
30	328050405000

[1, 3, 6, 36, 15, 666, 28, 2080, 378, 5050, 66, 1493856, 91, 19306, 25425, 524800, 153, 17009028, 190, 32004000, 97461, 117370, 276, 55037822976, 7875, 228826, 266085, 240956128, 435, 328050405000]

cp's OEIS Frontend

A184390 a(n) = sum of numbers from 1 to pi(n), where pi(n) = A007955(n).

Table of values

List of values