Primonacci numbers: composite numbers that appear in the Fibonacci-like sequence generated by their own prime factors.

A212875

Primonacci numbers: composite numbers that appear in the Fibonacci-like sequence generated by their own prime factors.

Terms

    a(0) =4a(1) =9a(2) =12a(3) =25a(4) =27a(5) =169a(6) =1102a(7) =7921a(8) =22287a(9) =54289a(10) =103823a(11) =777627a(12) =876897a(13) =2550409a(14) =20854593a(15) =34652571a(16) =144237401a(17) =144342653a(18) =167901581a(19) =267911895a(20) =792504416a(21) =821223649a(22) =1103528482a(23) =2040412557a(24) =2852002829a(25) =3493254541a(26) =6033671841a(27) =15658859018a(28) =116085000401

External references