59690

Appears in sequences

• a(0)=1; for n > 0, a(n)=sum(binomial(n,k)*binomial(n+k,k+1)*binomial(n+k+1,k),k=0..n)/n.at n=5A075132
• Number of arrangements of 3 nonzero numbers x(i) in -n..n with the sum of floor(x(i)/x(i+1)) equal to zero.at n=38A189499
• Numbers k for which rank of the elliptic curve y^2 = x^3 - 432*k^2 is 4.at n=12A309964
• a(n) = Sum_{k=1..n} sigma(n*k).at n=37A372710
• Expansion of (1/x) * Series_Reversion( x * (1 - x^3 / (1 - x)^5) ).at n=12A389351