List the positions of all digits 6 in the concatenation of all terms, not necessarily in order. This is the lexicographically earliest such sequence.
A210420
List the positions of all digits 6 in the concatenation of all terms, not necessarily in order. This is the lexicographically earliest such sequence.
Terms
- a(0) =2a(1) =6a(2) =4a(3) =60a(4) =61a(5) =9a(6) =62a(7) =13a(8) =63a(9) =16a(10) =19a(11) =64a(12) =23a(13) =65a(14) =26a(15) =29a(16) =66a(17) =30a(18) =35a(19) =67a(20) =39a(21) =68a(22) =43a(23) =69a(24) =46a(25) =49a(26) =600a(27) =54a(28) =601a(29) =59
External references
- oeis: A210420