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A105538 Row sums of triangle A105537, which equals the matrix square of triangle A105535. 2
1, 3, 9, 17, 61, 138, 238, 634, 1421, 2707, 4487, 9709, 27875, 82827, 219133, 524502, 1262352, 3276409, 8827139, 22596514, 54006726, 122265827, 275484693, 658076339, 1654581392, 4100759772, 9761051499, 22296252002, 49175830726 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

COMMENTS

Also equals column 0 of triangle A105539. Triangular matrix A105535 has the property that diagonal n equals A105535^(n+1) when flattened as read by rows.

LINKS

Table of n, a(n) for n=0..28.

CROSSREFS

Cf. A105535, A105537.

Sequence in context: A108050 A321869 A009211 * A056404 A056405 A009216

Adjacent sequences:  A105535 A105536 A105537 * A105539 A105540 A105541

KEYWORD

nonn

AUTHOR

Paul D. Hanna, Apr 12 2005

STATUS

approved

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Last modified January 23 04:16 EST 2020. Contains 331168 sequences. (Running on oeis4.)