a(n) = A001147(n+1) * Integral_{x=0..1} (1 + x^2)^n dx.
A076729
a(n) = A001147(n+1) * Integral_{x=0..1} (1 + x^2)^n dx.
Terms
- a(0) =1a(1) =4a(2) =28a(3) =288a(4) =3984a(5) =70080a(6) =1506240a(7) =38384640a(8) =1133072640a(9) =38038533120
External references
- oeis: A076729