A056140 - cp's OEIS frontend

A056140 a(n) = n^2 - previousprime(n)*nextprime(n), for n>2.

n	a(n)
3	-1
4	1
5	4
6	1
7	-6
8	-13
9	4
10	23
11	30
12	1
13	-18
14	-25
15	4
16	35
17	42
18	1
19	-30
20	-37
21	4
22	47
23	-22
24	-91
25	-42
26	9
27	62
28	117
29	128
30	1
31	-112
32	-123
33	-58
34	9
35	78
36	149
37	98
38	-73
39	4
40	83
41	90
42	1
43	-78
44	-85
45	4
46	95
47	-70
48	-187
49	-90
50	9
51	110
52	213
53	36
54	-211
55	-102
56	9
57	122
58	237
59	248
60	1
61	-232
62	-243

[-1, 1, 4, 1, -6, -13, 4, 23, 30, 1, -18, -25, 4, 35, 42, 1, -30, -37, 4, 47, -22, -91, -42, 9, 62, 117, 128, 1, -112, -123, -58, 9, 78, 149, 98, -73, 4, 83, 90, 1, -78, -85, 4, 95, -70, -187, -90, 9, 110, 213, 36, -211, -102, 9, 122, 237, 248, 1, -232, -243]

cp's OEIS Frontend

A056140 a(n) = n^2 - previousprime(n)*nextprime(n), for n>2.

Table of values

List of values