Numbers k such that k*(k+1) divides tribonacci(k) (A000073(k)).

Terms

a(0) =1a(1) =256a(2) =397a(3) =1197a(4) =8053a(5) =8736a(6) =9901a(7) =32173a(8) =33493a(9) =33757a(10) =38461a(11) =48757a(12) =56101a(13) =57073a(14) =64153a(15) =76561a(16) =79693a(17) =87517a(18) =100608a(19) =102217a(20) =105253a(21) =105601a(22) =105913a(23) =105997a(24) =107713a(25) =108553a(26) =110976a(27) =116293a(28) =123121a(29) =131437