A153648

Sequences linked to this entry ?

• A153648: Triangle T(n, k) = T(n-1, k) + T(n-1, k-1) + j*prime(j)*T(n-2, k-1) with j=3, read by rows. identification, match reversed triangle, match triangle
  2 · 5, 5 · 2, 46, 2 · 2, 123, 123, 2 … Σ 2, 10, 50, 250, 1250, 6250, 31250, …
  (−∞, 0)nonnegative