Column 1 of triangle A107862; a(n) = binomial(n*(n+1)/2 + n, n).
A107863
Column 1 of triangle A107862; a(n) = binomial(n*(n+1)/2 + n, n).
Terms
- a(0) =1a(1) =2a(2) =10a(3) =84a(4) =1001a(5) =15504a(6) =296010a(7) =6724520a(8) =177232627a(9) =5317936260a(10) =179013799328
External references
- oeis: A107863