A001391 To get the 3rd term, for example, note that 2nd term has three (11 in binary!) 1's and one (1) 0, giving 11 1 1 0.

10, 1110, 11110, 100110, 1110010110, 111100111010110, 100110011110111010110, 1110010110010011011110111010110, 1111001110101100111001011010011011110111010110

Offset: 1

Author

N. J. A. Sloane, Thomas L. York

Keywords

• nonn
• base

Links

• John Cerkan, Table of n, a(n) for n = 1..17

Crossrefs

Cf. A001387.