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A138413 A bisection of A000957. 2

%I

%S 0,0,2,18,186,2120,25724,325878,4260282,57048048,778483932,

%T 10786724388,151355847012,2146336125648,30711521221376,

%U 442862000693438,6429286894263738,93891870710425440,1378379704593824300,20330047491994213884,301111732041234778316,4476705468260134734384,66784808491631598524136

%N A bisection of A000957.

%Y Cf. A000957, A138414.

%K nonn,easy

%O 0,3

%A _N. J. A. Sloane_, May 08 2008

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Last modified November 14 09:49 EST 2018. Contains 317182 sequences. (Running on oeis4.)