2523675

Appears in sequences

• n*(n-1)*(n-2)*(n-3)*(n-4)*(2*n-1)/72.at n=23A055504
• T(2n+6,n), array T as in A055794.at n=18A055799
• Ninth column (m=8) of (1,3)-Pascal triangle A095660.at n=18A095664
• The positions of records in A236747.at n=32A237267
• Let K(n) = integral(t=-1,1, t^(2n)*(1-t^2)^(2n)/(1+it)^(3n+1) dt) and write K(n) = d(n)*Pi - b(n)/a(n) where a(n), b(n), d(n) are positive integers; sequence gives a(n).at n=8A305998