6135667565
domain: N
Appears in sequences
- Base-2 digits of a(n) are, in order, the first n terms of the periodic sequence with initial period 1,0,1.at n=32A033120
- a(n) = a(n-1) + 2^(A007494(n-1)).at n=21A113835
- Numbers whose base 8 or octal representation is 555555555......5.at n=11A125836
- Numbers k such that (rol(k) XOR ror(k)) = k, where rol = A006257 and ror = A038572 are rotations of binary digits by one place to the left and right, and XOR is the binary exclusive-or operator.at n=21A273050