A216404 - cp's OEIS frontend

A216404 a(n) = lcm((d1 + 1), (d2 + 1), ..., (dk + 1)), where d1, d2, ..., dk are the prime factors of the n-th Fermat pseudoprime to base 2, A001567(n).

n	a(n)
1	96
2	36
3	132
4	126
5	740
6	280
7	384
8	360
9	90
10	1406
11	224
12	570
13	2090
14	774
15	96
16	608
17	1408
18	168
19	4070
20	4266
21	516
22	680
23	2656
24	1110
25	360
26	252
27	1064
28	2340
29	672
30	7436
31	1368
32	1184
33	1806
34	660
35	9506
36	3384
37	252
38	11858
39	4448
40	8246
41	4648
42	720
43	5310
44	16058
45	8008
46	5676
47	3630
48	17910

[96, 36, 132, 126, 740, 280, 384, 360, 90, 1406, 224, 570, 2090, 774, 96, 608, 1408, 168, 4070, 4266, 516, 680, 2656, 1110, 360, 252, 1064, 2340, 672, 7436, 1368, 1184, 1806, 660, 9506, 3384, 252, 11858, 4448, 8246, 4648, 720, 5310, 16058, 8008, 5676, 3630, 17910]

cp's OEIS Frontend

A216404 a(n) = lcm((d1 + 1), (d2 + 1), ..., (dk + 1)), where d1, d2, ..., dk are the prime factors of the n-th Fermat pseudoprime to base 2, A001567(n).

Table of values

List of values