A355702 - cp's OEIS frontend

A355702 a(1) = 1, a(2) = 2; for n > 2, a(n) is the smallest positive number that has not yet appeared that has the same number of prime divisors as the sum a(n-2) + a(n-1).

n	a(n)
1	1
2	2
3	3
4	5
5	8
6	7
7	4
8	11
9	6
10	13
11	17
12	12
13	19
14	23
15	18
16	29
17	31
18	16
19	37
20	41
21	20
22	43
23	27
24	28
25	9
26	47
27	24
28	53
29	10
30	30
31	36
32	42
33	44
34	14
35	15
36	59
37	21
38	32
39	61
40	22
41	67
42	71
43	45
44	50
45	25
46	52
47	26
48	63
49	73
50	40
51	79
52	33
53	48
54	54
55	66
56	72
57	68
58	56
59	70
60	60
61	75
62	81
63	84
64	76
65	64
66	88
67	90
68	34
69	78
70	80
71	35
72	38
73	83
74	39
75	46
76	49
77	51

[1, 2, 3, 5, 8, 7, 4, 11, 6, 13, 17, 12, 19, 23, 18, 29, 31, 16, 37, 41, 20, 43, 27, 28, 9, 47, 24, 53, 10, 30, 36, 42, 44, 14, 15, 59, 21, 32, 61, 22, 67, 71, 45, 50, 25, 52, 26, 63, 73, 40, 79, 33, 48, 54, 66, 72, 68, 56, 70, 60, 75, 81, 84, 76, 64, 88, 90, 34, 78, 80, 35, 38, 83, 39, 46, 49, 51]

cp's OEIS Frontend

A355702 a(1) = 1, a(2) = 2; for n > 2, a(n) is the smallest positive number that has not yet appeared that has the same number of prime divisors as the sum a(n-2) + a(n-1).

Table of values

List of values

n	a(n)
1	1
2	2
3	3
4	5
5	8
6	7
7	4
8	11
9	6
10	13
11	17
12	12
13	19
14	23
15	18
16	29
17	31
18	16
19	37
20	41
21	20
22	43
23	27
24	28
25	9
26	47
27	24
28	53
29	10
30	30
31	36
32	42
33	44
34	14
35	15
36	59
37	21
38	32
39	61
40	22
41	67
42	71
43	45
44	50
45	25
46	52
47	26
48	63
49	73
50	40
51	79
52	33
53	48
54	54
55	66
56	72
57	68
58	56
59	70
60	60
61	75
62	81
63	84
64	76
65	64
66	88
67	90
68	34
69	78
70	80
71	35
72	38
73	83
74	39
75	46
76	49
77	51

n	a(n)
1	1
2	2
3	3
4	5
5	8
6	7
7	4
8	11
9	6
10	13
11	17
12	12
13	19
14	23
15	18
16	29
17	31
18	16
19	37
20	41
21	20
22	43
23	27
24	28
25	9
26	47
27	24
28	53
29	10
30	30
31	36
32	42
33	44
34	14
35	15
36	59
37	21
38	32
39	61
40	22
41	67
42	71
43	45
44	50
45	25
46	52
47	26
48	63
49	73
50	40
51	79
52	33
53	48
54	54
55	66
56	72
57	68
58	56
59	70
60	60
61	75
62	81
63	84
64	76
65	64
66	88
67	90
68	34
69	78
70	80
71	35
72	38
73	83
74	39
75	46
76	49
77	51

n	a(n)
1	1
2	2
3	3
4	5
5	8
6	7
7	4
8	11
9	6
10	13
11	17
12	12
13	19
14	23
15	18
16	29
17	31
18	16
19	37
20	41
21	20
22	43
23	27
24	28
25	9
26	47
27	24
28	53
29	10
30	30
31	36
32	42
33	44
34	14
35	15
36	59
37	21
38	32
39	61
40	22
41	67
42	71
43	45
44	50
45	25
46	52
47	26
48	63
49	73
50	40
51	79
52	33
53	48
54	54
55	66
56	72
57	68
58	56
59	70
60	60
61	75
62	81
63	84
64	76
65	64
66	88
67	90
68	34
69	78
70	80
71	35
72	38
73	83
74	39
75	46
76	49
77	51