A246353 - cp's OEIS frontend

A246353 If n = Sum 2^e_i, e_i distinct, then a(n) = Position of (product prime_{e_i+1}) among squarefree numbers (A005117).

n	a(n)
0	1
1	2
2	3
3	5
4	4
5	7
6	11
7	19
8	6
9	10
10	14
11	28
12	23
13	44
14	65
15	129
16	8
17	15
18	21
19	41
20	34
21	69
22	101
23	203
24	48
25	94
26	144
27	283
28	233
29	470
30	703
31	1405
32	9
33	17
34	26
35	49
36	40
37	80
38	120
39	236
40	57
41	111
42	168
43	334
44	279
45	554
46	833
47	1661
48	89
49	176
50	261
51	521
52	438
53	873
54	1304
55	2610
56	609
57	1217
58	1827
59	3650
60	3046
61	6091
62	9131

[1, 2, 3, 5, 4, 7, 11, 19, 6, 10, 14, 28, 23, 44, 65, 129, 8, 15, 21, 41, 34, 69, 101, 203, 48, 94, 144, 283, 233, 470, 703, 1405, 9, 17, 26, 49, 40, 80, 120, 236, 57, 111, 168, 334, 279, 554, 833, 1661, 89, 176, 261, 521, 438, 873, 1304, 2610, 609, 1217, 1827, 3650, 3046, 6091, 9131]

cp's OEIS Frontend

A246353 If n = Sum 2^e_i, e_i distinct, then a(n) = Position of (product prime_{e_i+1}) among squarefree numbers (A005117).

Table of values

List of values