A188138 - cp's OEIS frontend

A188138 Sum of sigma_2(k) for 1 <= k <= 10^n, where sigma_2(k) is the sum of the divisors of k squared.

n	a(n)
0	1
1	469
2	407819
3	401382971
4	400757638164
5	400692683389101
6	400686363385965077
7	400685705322499946270
8	400685641565621401132515
9	400685635084923815073475174
10	400685634458741808360827818508
11	400685634393583522561137962683069

[1, 469, 407819, 401382971, 400757638164, 400692683389101, 400686363385965077, 400685705322499946270, 400685641565621401132515, 400685635084923815073475174, 400685634458741808360827818508, 400685634393583522561137962683069]

cp's OEIS Frontend

A188138 Sum of sigma_2(k) for 1 <= k <= 10^n, where sigma_2(k) is the sum of the divisors of k squared.

Table of values

List of values