A252943 - cp's OEIS frontend

A252943 Number of Fermat pseudoprimes to base 2 between 2^n and 2^(n+1) that are not Carmichael numbers.

n	a(n)
1	0
2	0
3	0
4	0
5	0
6	0
7	0
8	1
9	1
10	3
11	3
12	5
13	10
14	12
15	14
16	21
17	31
18	41
19	64
20	100
21	127
22	165
23	216
24	288
25	397
26	572
27	723
28	955
29	1344
30	1793
31	2399
32	3280
33	4228
34	5728
35	7738
36	10223
37	13895
38	18324
39	24437
40	33007
41	43850
42	58173
43	77938
44	104689
45	139195
46	187497
47	252020
48	337731
49	452631
50	606942

[0, 0, 0, 0, 0, 0, 0, 1, 1, 3, 3, 5, 10, 12, 14, 21, 31, 41, 64, 100, 127, 165, 216, 288, 397, 572, 723, 955, 1344, 1793, 2399, 3280, 4228, 5728, 7738, 10223, 13895, 18324, 24437, 33007, 43850, 58173, 77938, 104689, 139195, 187497, 252020, 337731, 452631, 606942]

cp's OEIS Frontend

A252943 Number of Fermat pseudoprimes to base 2 between 2^n and 2^(n+1) that are not Carmichael numbers.

Table of values

List of values