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A189103 Least common multiple of n! and its arithmetic derivative. 2
0, 2, 30, 264, 7320, 30960, 1592640, 38183040, 394450560, 2238969600, 275106585600, 4038941491200, 689773321036800, 20996629900646400, 111964387062528000, 2210304446558208000, 642338416210563072000, 19249748121316737024000, 6980209591900198477824000 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Nathaniel Johnston, Table of n, a(n) for n = 1..200

FORMULA

a(n) = lcm(n!,n!') = lcm(A000142(n),A068311(n)).

EXAMPLE

n = 5: 5! = 120, 120' = 244, lcm(120,244) = 7320 -> a(5) = 7320

CROSSREFS

A068311, A083346, A083346, A085731, A086130 , A189100, A189102

Sequence in context: A157054 A092355 A215237 * A300423 A300685 A300608

Adjacent sequences:  A189100 A189101 A189102 * A189104 A189105 A189106

KEYWORD

nonn

AUTHOR

Giorgio Balzarotti, Apr 16 2011

STATUS

approved

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Last modified January 16 22:12 EST 2022. Contains 350376 sequences. (Running on oeis4.)