OFFSET
1,1
LINKS
G. C. Greubel, Table of n, a(n) for n = 1..5000
MATHEMATICA
Join[{2}, Mod[Rest@Select[Range@500, ! PrimeQ@# &], 10]] (* G. C. Greubel, Oct 29 2017 *)
CROSSREFS
KEYWORD
nonn
AUTHOR
Roger L. Bagula, Nov 05 2003
EXTENSIONS
Edited by N. J. A. Sloane, Mar 30 2006
STATUS
approved