OFFSET
1,1
LINKS
Harvey P. Dale, Table of n, a(n) for n = 1..1000
MATHEMATICA
Select[Range[300], !PrimeQ[#]&&Mod[Binomial[#+4, #], #]==1&] (* Harvey P. Dale, Oct 09 2011 *)
CROSSREFS
KEYWORD
nonn
AUTHOR
Hieronymus Fischer, Sep 30 2007
STATUS
approved