85924domain: NAppears in sequencesa(n) = Sum_{k=0..n} binomial(n,k)*3^k*(k+1)^(n-k).at n=6A196795Expansion of 1/(1 - x - x^2 + x^7 - x^9).at n=25A225394Coefficients of recurrence for rows and columns of A250544 and rows of A250691.at n=5A255002