Semidiagonal sums of triangle A104978: a(n) = Sum_{k=0..[n/2]} A104978(n-k,n-2*k).
A104979
Semidiagonal sums of triangle A104978: a(n) = Sum_{k=0..[n/2]} A104978(n-k,n-2*k).
Terms
- a(0) =1a(1) =1a(2) =4a(3) =17a(4) =85a(5) =459a(6) =2614a(7) =15454a(8) =93947a(9) =583568a(10) =3687761a(11) =23633072a(12) =153227250a(13) =1003281314a(14) =6624658716a(15) =44062205158a(16) =294938814921
External references
- oeis: A104979