A141421 - OEIS

A141421

First bisection of A091137.

1, 12, 720, 60480, 3628800, 479001600, 2615348736000, 31384184832000, 32011868528640000, 51090942171709440000, 33720021833328230400000, 9306726025998591590400000, 50814724101952310083584000000

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OFFSET

0,2

COMMENTS

The second bisection is obtained by doubling the terms, 2*a(n).

LINKS

Table of n, a(n) for n=0..12.

FORMULA

a(n)=A091137(2n).

MAPLE

A091137 := proc(n) local a, p ; a := 1; p := 2: while floor(n/(p-1)) > 0 do a := a*p^(floor(n/(p-1))) ; p := nextprime(p) ; od: RETURN(a) ; end: A141421 := proc(n) A091137(2*n) ; end: for n from 0 to 20 do printf("%d, ", A141421(n)) ; od: # R. J. Mathar, Aug 09 2008

CROSSREFS

Sequence in context: A277691 A262383 A002196 * A000909 A375105 A358732

Adjacent sequences: A141418 A141419 A141420 * A141422 A141423 A141424

KEYWORD

nonn

AUTHOR

Paul Curtz, Aug 05 2008

EXTENSIONS

Edited and extended by R. J. Mathar, Aug 09 2008

STATUS

approved