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A246315 A246314(2^n-1). 1
1, 9, 37, 157, 713, 2737, 11421, 44021, 176801, 683369, 2695829, 10433229, 40796217 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Table of n, a(n) for n=0..12.

EXAMPLE

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

CROSSREFS

Cf. A246314.

Sequence in context: A288415 A026620 A048878 * A232250 A201441 A183327

Adjacent sequences:  A246312 A246313 A246314 * A246316 A246317 A246318

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

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Last modified November 30 17:12 EST 2021. Contains 349424 sequences. (Running on oeis4.)