A333259 - cp's OEIS frontend

A333259 a(n) = Sum_{p in L(n)} 2^(pi(p) - 1) where L(n) is the set of all least primes in partitions of n into prime parts.

n	a(n)
0	0
1	0
2	1
3	2
4	1
5	5
6	3
7	9
8	3
9	3
10	7
11	19
12	7
13	35
14	11
15	7
16	7
17	71
18	15
19	135
20	15
21	15
22	23
23	263
24	31
25	15
26	47
27	15
28	31
29	527
30	63
31	1039
32	47
33	31
34	95
35	31
36	111
37	2079
38	143
39	63
40	95
41	4127
42	191
43	8255
44	63
45	63
46	351
47	16447
48	223
49	63
50	191
51	127
52	319
53	32895
54	383
55	127
56	191
57	255
58	639
59	65663

[0, 0, 1, 2, 1, 5, 3, 9, 3, 3, 7, 19, 7, 35, 11, 7, 7, 71, 15, 135, 15, 15, 23, 263, 31, 15, 47, 15, 31, 527, 63, 1039, 47, 31, 95, 31, 111, 2079, 143, 63, 95, 4127, 191, 8255, 63, 63, 351, 16447, 223, 63, 191, 127, 319, 32895, 383, 127, 191, 255, 639, 65663]

cp's OEIS Frontend

A333259 a(n) = Sum_{p in L(n)} 2^(pi(p) - 1) where L(n) is the set of all least primes in partitions of n into prime parts.

Table of values

List of values