Numbers k such that if d,e are consecutive digits of k in base 6, then |d-e| >= 4.

Terms

a(0) =1a(1) =2a(2) =3a(3) =4a(4) =5a(5) =11a(6) =24a(7) =30a(8) =31a(9) =66a(10) =67a(11) =148a(12) =149a(13) =184a(14) =185a(15) =191a(16) =400a(17) =401a(18) =407a(19) =888a(20) =894a(21) =895a(22) =1104a(23) =1110a(24) =1111a(25) =1146a(26) =1147a(27) =2400a(28) =2406a(29) =2407