Denominators of 2*Sum_{k=1..n} 1/binomial(2*k,k), n >= 1.
A130546
Denominators of 2*Sum_{k=1..n} 1/binomial(2*k,k), n >= 1.
Terms
- a(0) =1a(1) =3a(2) =30a(3) =210a(4) =315a(5) =6930a(6) =16380a(7) =60060a(8) =1021020a(9) =19399380a(10) =461890a(11) =37182145a(12) =106234700a(13) =75482550a(14) =166363540200
External references
- oeis: A130546