A379347 - cp's OEIS frontend

A379347 a(n) is the sum of all integers of the form k^2 + 1 whose greatest prime factor is A002313(n), the n-th prime not congruent to 3 mod 4.

n	a(n)
1	1
2	12
3	327
4	391
5	703
6	20510
7	5667
8	661016
9	507004
10	644098
11	24977604
12	38394505
13	2621510449
14	465558141
15	624692559
16	63435958
17	507041846
18	8133206945
19	70119049516045
20	45102364892
21	49035127231
22	154823547391

[1, 12, 327, 391, 703, 20510, 5667, 661016, 507004, 644098, 24977604, 38394505, 2621510449, 465558141, 624692559, 63435958, 507041846, 8133206945, 70119049516045, 45102364892, 49035127231, 154823547391]

cp's OEIS Frontend

A379347 a(n) is the sum of all integers of the form k^2 + 1 whose greatest prime factor is A002313(n), the n-th prime not congruent to 3 mod 4.

Table of values

List of values