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A104766 Triangle T(n,k) = A001629(n-k+2) read by rows, 1<=k<=n. 0
1, 2, 1, 5, 2, 1, 10, 5, 2, 1, 20, 10, 5, 2, 1, 38, 20, 10, 5, 2, 1, 71, 38, 20, 10, 5, 2, 1, 130, 71, 38, 20, 10, 5, 2, 1 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

The triangle is the matrix square of the triangle A104762: T(n,k) = sum_{j= k..n} A104762(n,j)*A104762(j,k).

LINKS

Table of n, a(n) for n=1..36.

EXAMPLE

First few rows of the triangle:

1;

2, 1;

5, 2, 1;

10, 5, 2, 1;

20, 10, 5, 2, 1;

38, 20, 10, 5, 2, 1;

71, 38, 20, 10, 5, 2, 1;

...

CROSSREFS

Cf. A001629, A104762, A104763, A006478 (row sums).

Sequence in context: A207607 A146024 A146023 * A105084 A126125 A221876

Adjacent sequences:  A104763 A104764 A104765 * A104767 A104768 A104769

KEYWORD

nonn,tabl

AUTHOR

Gary W. Adamson, Mar 24 2005

STATUS

approved

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Last modified September 20 13:45 EDT 2020. Contains 337264 sequences. (Running on oeis4.)