A145605 - cp's OEIS frontend

A145605 Irregular triangle in which row n consists of all numbers x such that x and x+1 are both prime(n)-smooth numbers but not both prime(n-1)-smooth.

n	a(n)
1	1
2	2
3	3
4	8
5	4
6	5
7	9
8	15
9	24
10	80
11	6
12	7
13	14
14	20
15	27
16	35
17	48
18	49
19	63
20	125
21	224
22	2400
23	4374
24	10
25	11
26	21
27	32
28	44
29	54
30	55
31	98
32	99
33	120
34	175
35	242
36	384
37	440
38	539
39	3024
40	9800
41	12
42	13
43	25
44	26
45	39
46	64
47	65
48	77
49	90
50	104
51	143
52	168
53	195
54	324
55	350
56	351
57	363
58	624
59	675
60	728
61	1000
62	1715

[1, 2, 3, 8, 4, 5, 9, 15, 24, 80, 6, 7, 14, 20, 27, 35, 48, 49, 63, 125, 224, 2400, 4374, 10, 11, 21, 32, 44, 54, 55, 98, 99, 120, 175, 242, 384, 440, 539, 3024, 9800, 12, 13, 25, 26, 39, 64, 65, 77, 90, 104, 143, 168, 195, 324, 350, 351, 363, 624, 675, 728, 1000, 1715]

cp's OEIS Frontend

A145605 Irregular triangle in which row n consists of all numbers x such that x and x+1 are both prime(n)-smooth numbers but not both prime(n-1)-smooth.

Table of values

List of values