login
A084621
Numbers n such that Fibonacci(n) concatenated with its 10's complement is prime.
1
1, 2, 4, 8, 14, 16, 31, 41, 58, 83, 194, 238, 251, 938, 998, 1244, 2273, 2291
OFFSET
1,2
COMMENTS
Larger values not certified prime.
EXAMPLE
a(7)=31 because Fibonacci(31)=1346269; 10000000-1346269 = 8653731,
and 13462698653731 is prime.
CROSSREFS
Cf. A084620.
Sequence in context: A069049 A124853 A188629 * A248379 A002132 A294065
KEYWORD
base,more,nonn
AUTHOR
Jason Earls, Jun 01 2003
STATUS
approved