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A246315
A246314(2^n-1).
1
1, 9, 37, 157, 713, 2737, 11421, 44021, 176801, 683369, 2695829, 10433229, 40796217
OFFSET
0,2
EXAMPLE
a(1)=9 and a(2)=37 are illustrated in A246314.
CROSSREFS
Cf. A246314.
Sequence in context: A288415 A026620 A048878 * A232250 A201441 A183327
KEYWORD
nonn,more
AUTHOR
N. J. A. Sloane, Aug 26 2014
EXTENSIONS
a(9) from Alois P. Heinz, Sep 01 2014
a(10)-a(12) from N. J. A. Sloane, Sep 04 2014
STATUS
approved