OFFSET
1,1
COMMENTS
If the zeros are removed and a 3 is inserted at the front, the first 3000 terms (or more) of the condensed sequence coincide with A039915. - R. J. Mathar, Mar 02 2007
EXAMPLE
a(4) = 0 because 8*7*6*5*4*3*2*1 / 8+7+6+5+4+3+2+1 divides evenly (0 remainder).
MATHEMATICA
Table[Mod[(2n)!, n*(2n + 1)], {n, 85}] (* Ray Chandler, Aug 23 2006 *)
CROSSREFS
KEYWORD
nonn
AUTHOR
Ben Paul Thurston, Aug 20 2006
EXTENSIONS
Edited, corrected and extended by R. J. Mathar and Ray Chandler, Aug 23 2006
STATUS
approved