If any even power of 2 ends with k 1's and 4's, they must be the first k terms of this sequence in reverse order.
A023401
If any even power of 2 ends with k 1's and 4's, they must be the first k terms of this sequence in reverse order.
Terms
- a(0) =4a(1) =4a(2) =1a(3) =4a(4) =1a(5) =4a(6) =1a(7) =4a(8) =4a(9) =1a(10) =1a(11) =4a(12) =4a(13) =4a(14) =4a(15) =1a(16) =4a(17) =4a(18) =1a(19) =4a(20) =1a(21) =1a(22) =1a(23) =4a(24) =1a(25) =1a(26) =1a(27) =4a(28) =4a(29) =4
External references
- oeis: A023401