A141421 First bisection of A091137.

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

Offset: 0

Author

Paul Curtz, Aug 05 2008

Keywords

• nonn

Comments

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

Programs

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

Formula

a(n)=A091137(2n).

Extensions

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