Tribonacci-Niven numbers (A352089) with a record gap to the next tribonacci-Niven number.

Terms

a(0) =1a(1) =2a(2) =8a(3) =48a(4) =140a(5) =244a(6) =620a(7) =705a(8) =1395a(9) =6210a(10) =9656a(11) =14322a(12) =52024a(13) =88128a(14) =95589a(15) =119440a(16) =151130a(17) =325105a(18) =407128a(19) =472790a(20) =520971a(21) =686103a(22) =4456608a(23) =7066416a(24) =13207389a(25) =15488160a(26) =23381160a(27) =42317212a(28) =49496700a(29) =53564016