OFFSET
1,1
COMMENTS
a(17)=4747505071=A175568(1).
All terms are of form 210m+1 with m = 119780, 2414666, 2908657, 4490299, 4953531, 5826247, 8561356, 10479027, 10911407, 10976186, 11569974, 14657196, 16710617, 17777969, 18556503, 19129781, 22607167, 23082807, 23543359, 25241957, 26655168, 32729717, 33285539, 41423243, 41720261, 43190411, 45671932
CROSSREFS
KEYWORD
nonn
AUTHOR
Zak Seidov, Jul 15 2010
STATUS
approved