A322668 - cp's OEIS frontend

A322668 Numbers k such that (k, k+2) are not twin primes yet sigma(k+2)/d(k+2) - sigma(k)/d(k) = 1.

n	a(n)
1	1
2	350
3	6497
4	12317
5	133787
6	181427
7	404471
8	439097
9	485237
10	501182
11	549378
12	1410119
13	2696807
14	6220607
15	6827369
16	6954767
17	9770027
18	10302419
19	10449347
20	10887977
21	11014007
22	16745387
23	18959111
24	25883519
25	27334469
26	39508037
27	40311149
28	40551617
29	42561437
30	44592209

[1, 350, 6497, 12317, 133787, 181427, 404471, 439097, 485237, 501182, 549378, 1410119, 2696807, 6220607, 6827369, 6954767, 9770027, 10302419, 10449347, 10887977, 11014007, 16745387, 18959111, 25883519, 27334469, 39508037, 40311149, 40551617, 42561437, 44592209]

cp's OEIS Frontend

A322668 Numbers k such that (k, k+2) are not twin primes yet sigma(k+2)/d(k+2) - sigma(k)/d(k) = 1.

Table of values

List of values