A340992 - cp's OEIS frontend

A340992 a(n) is the (2n)-th term of the n-fold self-convolution of the number of divisors function tau.

n	a(n)
0	1
1	2
2	8
3	41
4	216
5	1172
6	6491
7	36430
8	206472
9	1179104
10	6774048
11	39107400
12	226683903
13	1318427762
14	7690414740
15	44970645116
16	263545466456
17	1547445069318
18	9101515979306
19	53613206171619
20	316243949777696
21	1867702439169958
22	11042787840419398
23	65357054283015120

[1, 2, 8, 41, 216, 1172, 6491, 36430, 206472, 1179104, 6774048, 39107400, 226683903, 1318427762, 7690414740, 44970645116, 263545466456, 1547445069318, 9101515979306, 53613206171619, 316243949777696, 1867702439169958, 11042787840419398, 65357054283015120]

cp's OEIS Frontend

A340992 a(n) is the (2n)-th term of the n-fold self-convolution of the number of divisors function tau.

Table of values

List of values