a(n) is the denominator of the rational part of Sum_{k>=n} binomial(2*k,k-n)^(-1).
A309001
a(n) is the denominator of the rational part of Sum_{k>=n} binomial(2*k,k-n)^(-1).
Terms
- a(0) =3a(1) =3a(2) =6a(3) =4a(4) =60a(5) =840a(6) =2520a(7) =3465a(8) =360360a(9) =11440a(10) =2450448a(11) =23279256a(12) =46558512a(13) =356948592a(14) =2230928700a(15) =80313433200
External references
- oeis: A309001