A246315 A246314(2^n-1).

1, 9, 37, 157, 713, 2737, 11421, 44021, 176801, 683369, 2695829, 10433229, 40796217

Offset: 0

Author

N. J. A. Sloane, Aug 26 2014

Keywords

• nonn
• more

Examples

			a(1)=9 and a(2)=37 are illustrated in A246314.
		

Crossrefs

Cf. A246314.

Extensions

a(9) from Alois P. Heinz, Sep 01 2014

a(10)-a(12) from N. J. A. Sloane, Sep 04 2014