OFFSET
0,1
COMMENTS
FORMULA
a(n) = A000961(n+2)^2 - 1. - Sean A. Irvine, Dec 04 2022
MAPLE
with(numtheory): for n from 2 to 400 do if nops(ifactors(n)[2]) = 1 then printf(`%d, `, n^2-1) fi: od:
CROSSREFS
KEYWORD
nonn
AUTHOR
Ahmed Fares (ahmedfares(AT)my-deja.com), Apr 13 2001
EXTENSIONS
More terms from James A. Sellers, Apr 14 2001
STATUS
approved