A272533 Numbers n such that A072499(n)!=A072504(n)

16, 20, 24, 28, 32, 36, 40, 42, 44, 48, 52, 54, 56, 60, 64, 66, 68, 72, 76, 78, 80, 81, 84, 88, 90, 92, 96, 99, 100, 102, 104, 108, 110, 112, 114, 116, 117, 120, 124, 126, 128, 130, 132, 135, 136, 138, 140, 144, 148, 150, 152, 153, 156, 160, 162, 164, 168, 170, 171

Offset

1,1

Links

Benedict W. J. Irwin, Table of n, a(n) for n = 1..5600

Example

A072499(16) = 8 != A072504(16) = 4.

Prog

(PARI) isok(n) = { my(dd = select(x->x <= sqrt(n), divisors(n))); lcm(dd) != prod(k=1, #dd, dd[k]); } \\ Michel Marcus, May 06 2016

Crossrefs

Cf. A072499, A072504

Sequence in context: A199716 A163901 A044860 * A161424 A248428 A088449

Adjacent sequences: A272530 A272531 A272532 * A272534 A272535 A272536

Keyword

nonn

Author

Benedict W. J. Irwin, May 02 2016

Status

approved