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A055993 Number of square divisors of n!. 2
1, 1, 1, 2, 2, 6, 6, 8, 12, 30, 30, 36, 36, 72, 96, 128, 128, 180, 180, 300, 300, 600, 600, 864, 1152, 2304, 2688, 4368, 4368, 5376, 5376, 6144, 6144, 13056, 16320, 19440, 19440, 38880, 43200, 48000, 48000, 64000, 64000, 100800, 133056, 278784, 278784 (list; graph; refs; listen; history; internal format)
OFFSET

1,4

FORMULA

a(n)=A046951(n!)=A000005[A055772(n)]= A000005[A000188[A000142(n)]]

CROSSREFS

A000142, A000005, A046951, A055772, A000188.

Sequence in context: A130493 A163118 A010762 * A151888 A168276 A039722

Adjacent sequences:  A055990 A055991 A055992 * A055994 A055995 A055996

KEYWORD

nonn

AUTHOR

Labos E. (labos(AT)ana.sote.hu), Jul 21 2000

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Last modified February 15 23:53 EST 2012. Contains 205860 sequences.