A144034 - OEIS

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A144034

Eigentriangle read by rows, T(n,k) = A123932(n-k+1)*A046717(k)

1, 4, 1, 4, 4, 5, 4, 4, 20, 13, 4, 4, 20, 52, 41, 4, 4, 20, 52, 164, 121, 4, 4, 20, 52, 164, 484, 365, 4, 4, 20, 52, 164, 484, 1460, 1093, 4, 4, 20, 52, 164484, 1460, 4372, 3281, 4, 4, 20, 52, 164, 484, 1460, 4372, 13124, 9841

(list; table; graph; refs; listen; history; text; internal format)

OFFSET

1,2

COMMENTS

Row sums = A046717 shifted: (1, 5, 13, 41, 121,...). Right border = A046717.

Sum of n-th row terms = rightmost term of (n+1)-th row.

LINKS

Table of n, a(n) for n=1..54.

FORMULA

Eigentriangle read by rows, T(n,k) = A123932(n-k+1)*A046717(k)

EXAMPLE

First few rows of the triangle =