Square array T(n, k) read by rising antidiagonals. Row n has the ordinary generating function (-(n*x^3-(n+1)*x^2+x) + sqrt((n*x^3-(n+1)*x^2+x)^2 - 4*(x^3-x^2)*((n+1)*x^2-x)))/(2*(x^3-x^2)).
A377441
Square array T(n, k) read by rising antidiagonals. Row n has the ordinary generating function (-(n*x^3-(n+1)*x^2+x) + sqrt((n*x^3-(n+1)*x^2+x)^2 - 4*(x^3-x^2)*((n+1)*x^2-x)))/(2*(x^3-x^2)).
Terms
- a(0) =1a(1) =1a(2) =1a(3) =1a(4) =1a(5) =2a(6) =1a(7) =1a(8) =2a(9) =5a(10) =1a(11) =1a(12) =2a(13) =6a(14) =14a(15) =1a(16) =1a(17) =2a(18) =7a(19) =21a(20) =42a(21) =1a(22) =1a(23) =2a(24) =8a(25) =30a(26) =78a(27) =132a(28) =1a(29) =1
External references
- oeis: A377441