# Greetings from The On-Line Encyclopedia of Integer Sequences! http://oeis.org/ Search: id:a141421 Showing 1-1 of 1 %I A141421 #3 Mar 30 2012 18:51:58 %S A141421 1,12,720,60480,3628800,479001600,2615348736000,31384184832000, %T A141421 32011868528640000,51090942171709440000,33720021833328230400000, %U A141421 9306726025998591590400000,50814724101952310083584000000 %N A141421 First bisection of A091137. %C A141421 The second bisection is obtained by doubling the terms, 2*a(n). %F A141421 a(n)=A091137(2n). %p A141421 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 %K A141421 nonn %O A141421 0,2 %A A141421 _Paul Curtz_, Aug 05 2008 %E A141421 Edited and extended by _R. J. Mathar_, Aug 09 2008 # Content is available under The OEIS End-User License Agreement: http://oeis.org/LICENSE