Column 3 of triangle A152406; also, column 0 of matrix 4th power of A152406.

A152410

Column 3 of triangle A152406; also, column 0 of matrix 4th power of A152406.

Terms

    a(0) =1a(1) =4a(2) =28a(3) =260a(4) =2916a(5) =37712a(6) =547240a(7) =8751688a(8) =152309648a(9) =2857598164a(10) =57379111732

External references