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A253077 Bisection of A136704 (divided by 2). 2
0, 1, 6, 39, 273, 2013, 15330, 119572, 949560, 7646457, 62263994, 511647711, 4236443046, 35303691969 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,3

LINKS

Table of n, a(n) for n=0..13.

CROSSREFS

Cf. A136704, A253076.

Sequence in context: A068765 A006633 A153392 * A231482 A122827 A103194

Adjacent sequences:  A253074 A253075 A253076 * A253078 A253079 A253080

KEYWORD

nonn,more

AUTHOR

N. J. A. Sloane, Feb 01 2015

STATUS

approved

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Last modified July 17 09:15 EDT 2019. Contains 325099 sequences. (Running on oeis4.)