A330424 - cp's OEIS frontend

A330424 a(1) = 1, a(2) = 2; thereafter a(n) = smallest number not occurring earlier such that both the sum of three successive terms and the sum of three successive digits are prime numbers.

n	a(n)
1	1
2	2
3	4
4	5
5	8
6	6
7	3
8	20
9	14
10	25
11	44
12	34
13	49
14	68
15	32
16	27
17	24
18	10
19	67
20	60
21	12
22	29
23	26
24	52
25	41065
26	62
27	50
28	61
29	40
30	30
31	43
32	64
33	72
34	21
35	46
36	16
37	41
38	22
39	38
40	23
41	28
42	122
43	7
44	82
45	18
46	81
47	2012
48	218
49	21021
50	84
51	58
52	69
53	2002
54	90
55	201
56	106
57	76
58	47
59	88
60	128
61	1223
62	2038

[1, 2, 4, 5, 8, 6, 3, 20, 14, 25, 44, 34, 49, 68, 32, 27, 24, 10, 67, 60, 12, 29, 26, 52, 41065, 62, 50, 61, 40, 30, 43, 64, 72, 21, 46, 16, 41, 22, 38, 23, 28, 122, 7, 82, 18, 81, 2012, 218, 21021, 84, 58, 69, 2002, 90, 201, 106, 76, 47, 88, 128, 1223, 2038]

cp's OEIS Frontend

A330424 a(1) = 1, a(2) = 2; thereafter a(n) = smallest number not occurring earlier such that both the sum of three successive terms and the sum of three successive digits are prime numbers.

Table of values

List of values