Apéry numbers: a(n) = Sum_{k=0..n} binomial(n,k)^2 * binomial(n+k,k).
A005258
Apéry numbers: a(n) = Sum_{k=0..n} binomial(n,k)^2 * binomial(n+k,k).
Terms
- a(0) =1a(1) =3a(2) =19a(3) =147a(4) =1251a(5) =11253a(6) =104959a(7) =1004307a(8) =9793891a(9) =96918753a(10) =970336269a(11) =9807518757a(12) =99912156111
External references
- oeis: A005258