A349753 - cp's OEIS frontend

A349753 Odd numbers k for which A003961(k)-2k divides A003961(k)-sigma(k), where A003961 shifts the prime factorization one step towards larger primes, and sigma is the sum of divisors function.

n	a(n)
1	1
2	3
3	7
4	25
5	33
6	55
7	57
8	69
9	91
10	93
11	2211
12	4825
13	12639
14	28225
15	32043
16	68727
17	89575
18	970225
19	2245557
20	16322559
21	22799825
22	48980427
23	55037217
24	60406599
25	68258725
26	325422273
27	414690595
28	569173299
29	794579511
30	10056372275
31	10475647197
32	10759889913
33	11154517557

[1, 3, 7, 25, 33, 55, 57, 69, 91, 93, 2211, 4825, 12639, 28225, 32043, 68727, 89575, 970225, 2245557, 16322559, 22799825, 48980427, 55037217, 60406599, 68258725, 325422273, 414690595, 569173299, 794579511, 10056372275, 10475647197, 10759889913, 11154517557]

cp's OEIS Frontend

A349753 Odd numbers k for which A003961(k)-2k divides A003961(k)-sigma(k), where A003961 shifts the prime factorization one step towards larger primes, and sigma is the sum of divisors function.

Table of values

List of values