A233418 - cp's OEIS frontend

A233418 a(n) is the smallest number k > 0 such that k^2+1, (k+1)^2+1,...,(k+n)^2+1 are composite numbers.

n	a(n)
0	1
1	3
2	8
3	7
4	32
5	31
6	30
7	29
8	28
9	27
10	44
11	43
12	42
13	41
14	96
15	95
16	188
17	187
18	186
19	185
20	364
21	363
22	362
23	361
24	360
25	359
26	358
27	357
28	356
29	355
30	354
31	353
32	352
33	351
34	502
35	501
36	500
37	499
38	498
39	497
40	3396
41	3395
42	3394
43	3393
44	3392
45	3391
46	3578
47	3577
48	3576
49	3575
50	3574
51	3573
52	3572

[1, 3, 8, 7, 32, 31, 30, 29, 28, 27, 44, 43, 42, 41, 96, 95, 188, 187, 186, 185, 364, 363, 362, 361, 360, 359, 358, 357, 356, 355, 354, 353, 352, 351, 502, 501, 500, 499, 498, 497, 3396, 3395, 3394, 3393, 3392, 3391, 3578, 3577, 3576, 3575, 3574, 3573, 3572]

cp's OEIS Frontend

A233418 a(n) is the smallest number k > 0 such that k^2+1, (k+1)^2+1,...,(k+n)^2+1 are composite numbers.

Table of values

List of values