Triangle read by rows: T(0,0) = 1, T(n,k) = Sum_{j=max(0,1-k)..n-k} (2^j)*(binomial(k+j,1+j) + binomial(k+j+1,1+j))*T(n-1,k-1+j).

A085734

Triangle read by rows: T(0,0) = 1, T(n,k) = Sum_{j=max(0,1-k)..n-k} (2^j)*(binomial(k+j,1+j) + binomial(k+j+1,1+j))*T(n-1,k-1+j).

Terms

    a(0) =1a(1) =2a(2) =3a(3) =16a(4) =30a(5) =15a(6) =272a(7) =588a(8) =420a(9) =105a(10) =7936a(11) =18960a(12) =16380a(13) =6300a(14) =945a(15) =353792a(16) =911328a(17) =893640a(18) =429660a(19) =103950a(20) =10395a(21) =22368256a(22) =61152000a(23) =65825760a(24) =36636600a(25) =11351340a(26) =1891890a(27) =135135a(28) =1903757312a(29) =5464904448

External references