3,2

Numerators of sequence a[ 3, n ] in (a[ i, j ])^4 where a[ i, j ] = Binomial(i-1, j-1)/2^(i-1) if j<=i, 0 if j>i

(n-1)(n-2)/2 * 15^(n-3).

Sequence in context: A049447 A004350 A075515 this_sequence A062262 A137716 A035521

Adjacent sequences: A027473 A027474 A027475 this_sequence A027477 A027478 A027479

nonn

Olivier Gerard (ogerard(AT)ext.jussieu.fr)