OFFSET
1,1
COMMENTS
Knowledge of a(k), k=1..9 allows us to establish A056637(17) = 1 + 2*a(9) = 110874748763.
LINKS
FORMULA
{ a(n) } = { p=1+2*k*A129249(n); n=1,2,3..., k=1,2,3... such that p is prime and k has no factor of class > 15- }.
PROG
CROSSREFS
KEYWORD
more,nonn
AUTHOR
M. F. Hasler, Apr 21 2007
STATUS
approved