1,2

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

This is to tribonacci as A057589 is to the Fibonacci numbers.

Table of n, a(n) for n=1..6.

a(6) = 10609 because it is lucky A000959(1182) and tribonacci A000073(18).

Cf. A000073, A057589, A000959.

Sequence in context: A228030 A082706 A201181 * A227173 A178998 A225227

Adjacent sequences: A130591 A130592 A130593 * A130595 A130596 A130597

nonn,less,hard

Jonathan Vos Post, Jun 16 2007

approved