OFFSET
1,2
COMMENTS
Lucky (A000959) and Fibonacci (A000045) = A057589; lucky and tribonacci (A000073) = A130594. No more through 10^6.
a(4) > 4*10^9, if it exists. - Giovanni Resta, May 10 2020
a(4) >= 10312882481, if it exists. - Kevin P. Thompson, Nov 24 2021
CROSSREFS
KEYWORD
bref,more,nonn
AUTHOR
Jonathan Vos Post, May 24 2008
STATUS
approved