A374648 a(n) = n! / (floor(n/3))! - n! / (floor(n/2))!.

0, 0, 0, 0, 12, 60, 240, 1680, 18480, 45360, 574560, 6320160, 19293120, 250810560, 3615131520, 10637827200, 173837664000, 2955240288000, 8874542476800, 168616307059200, 3378360124339200, 10123012406707200, 222987858828134400, 5128720753047091200

Offset

0,5

Links

Table of n, a(n) for n=0..23.

Formula

a(n) = A355988(n) - A081125(n). - Vaclav Kotesovec, Jul 27 2024

Mathematica

Table[n!/(Floor[n/3]!) - n!/(Floor[n/2]!), {n, 0, 24}]

Crossrefs

Cf. A000142, A081125, A355988.

Sequence in context: A120571 A086950 A370700 * A074433 A280175 A373134

Adjacent sequences: A374645 A374646 A374647 * A374649 A374650 A374651

Keyword

nonn

Author

Clark Kimberling, Jul 25 2024

Status

approved