|
%I #12 Nov 24 2021 11:23:59
%S 1,7,13,927,1705,10609
%N Numbers which are both lucky (A000959) and tribonacci (A000073).
%C No other terms below 15902591. The next candidate is the odd tribonacci number 15902591. Is this also a lucky number? - _Harvey P. Dale_, Jul 12 2008
%C This is to tribonacci as A057589 is to the Fibonacci numbers.
%C a(7) >= 23837527729. - _Kevin P. Thompson_, Nov 24 2021
%e a(6) = 10609 because it is lucky A000959(1182) and tribonacci A000073(18).
%Y Cf. A000073, A057589, A000959.
%K nonn,less,hard
%O 1,2
%A _Jonathan Vos Post_, Jun 16 2007
|
