a(0) = 1; a(n) = (1/n) * Sum_{k=1..n} binomial(n,k)^2 * k * 5^(k-1) * a(n-k).
A337595
a(0) = 1; a(n) = (1/n) * Sum_{k=1..n} binomial(n,k)^2 * k * 5^(k-1) * a(n-k).
Terms
- a(0) =1a(1) =1a(2) =7a(3) =76a(4) =1359a(5) =35620a(6) =1256470a(7) =57247765a(8) =3259660095a(9) =225795951580
External references
- oeis: A337595