A102029 - cp's OEIS frontend

A102029 Smallest semiprime with Hamming weight n (i.e., smallest semiprime with exactly n ones when written in binary), or -1 if no such number exists.

n	a(n)
1	4
2	6
3	14
4	15
5	55
6	95
7	247
8	447
9	511
10	1535
11	2047
12	7167
13	12287
14	32255
15	49151
16	98303
17	196607
18	393215
19	983039
20	1572863
21	3145727
22	6291455
23	8388607
24	33423359
25	50331647
26	117440511
27	201326591
28	528482303
29	805306367
30	1879048191
31	3221225471

[4, 6, 14, 15, 55, 95, 247, 447, 511, 1535, 2047, 7167, 12287, 32255, 49151, 98303, 196607, 393215, 983039, 1572863, 3145727, 6291455, 8388607, 33423359, 50331647, 117440511, 201326591, 528482303, 805306367, 1879048191, 3221225471]

cp's OEIS Frontend

A102029 Smallest semiprime with Hamming weight n (i.e., smallest semiprime with exactly n ones when written in binary), or -1 if no such number exists.

Table of values

List of values