A337374 - OEIS

A337374

Numbers k for which A003961(k) > 4*k.

16, 18, 24, 27, 32, 36, 40, 48, 54, 56, 60, 63, 64, 72, 80, 81, 84, 90, 96, 100, 104, 108, 112, 120, 126, 128, 132, 135, 140, 144, 147, 150, 152, 156, 160, 162, 168, 176, 180, 184, 189, 192, 196, 198, 200, 204, 208, 210, 216, 224, 225, 228, 234, 240, 243, 248, 250, 252, 256, 260, 264, 270, 272, 276, 280, 288, 294, 297

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,1

LINKS

Robert Israel, Table of n, a(n) for n = 1..10000

Index entries for sequences computed from indices in prime factorization

MAPLE

filter:= proc(n) local F, t;

F:= ifactors(n)[2];

mul((nextprime(t[1])/t[1])^t[2], t=F) > 4

end proc:

select(filter, [$1..1000]); # Robert Israel, Dec 31 2023