Smallest number k such that 2^n divides A066796(k) = Sum(i=1,k,binomial(2*i,i)).

A126806

Smallest number k such that 2^n divides A066796(k) = Sum(i=1,k,binomial(2*i,i)).

Terms

    a(0) =1a(1) =2a(2) =2a(3) =11a(4) =11a(5) =46a(6) =46a(7) =707a(8) =707a(9) =707a(10) =2831a(11) =2831a(12) =11955a(13) =11962a(14) =45256a(15) =45256a(16) =191400a(17) =533697a(18) =533697a(19) =533697

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