A257861 - cp's OEIS frontend

A257861 Numbers n such that d(m) - f(m) >= n/2^f(m), where m = 2^n - 1, d(m) is the number of distinct prime factors of m, and f(m) is the number of Fermat primes less than or equal to 65537 that divide m.

n	a(n)
1	24
2	48
3	64
4	72
5	80
6	96
7	112
8	128
9	144
10	160
11	192
12	224
13	240
14	288
15	320
16	336
17	352
18	384
19	416
20	448
21	480
22	576
23	672
24	800
25	864
26	960
27	1056
28	1440

[24, 48, 64, 72, 80, 96, 112, 128, 144, 160, 192, 224, 240, 288, 320, 336, 352, 384, 416, 448, 480, 576, 672, 800, 864, 960, 1056, 1440]