If any power of 2 ends with k 6's and 7's, they must be the first k terms of this sequence in reverse order.
A023409
If any power of 2 ends with k 6's and 7's, they must be the first k terms of this sequence in reverse order.
Terms
- a(0) =6a(1) =7a(2) =7a(3) =7a(4) =6a(5) =6a(6) =6a(7) =6a(8) =7a(9) =6a(10) =6a(11) =6a(12) =7a(13) =7a(14) =7a(15) =7a(16) =7a(17) =7a(18) =7a(19) =7a(20) =7a(21) =7a(22) =7a(23) =7a(24) =6a(25) =7a(26) =7a(27) =6a(28) =6a(29) =7
External references
- oeis: A023409