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A103367
Absolute row sums of triangle A103364, which equals the matrix inverse of the Narayana triangle (A001263).
3
1, 2, 6, 26, 160, 1372, 15974, 245142, 4817712, 118198568, 3542890648, 127417949496, 5415490994368, 268526379444104, 15363229400769566, 1004545432884250126, 74441340170270921952, 6205992783298302119536
OFFSET
2,2
COMMENTS
The ratio of the absolute row sum to the absolute value of column 1 for row n of triangle A103364, as n grows, approaches the limit given by limit_{n->inf} Sum_{k=1,n} |A103364(n,k)| / |A103365(n)| = 4.37281937295201487280058335227924496590808747668123198019676685492873...
PROG
(PARI) {a(n)=if(n<1, 0, sum(k=1, n, abs(matrix(n, n, m, j, binomial(m-1, j-1)*binomial(m, j-1)/j)^-1)[n, k]))}
CROSSREFS
KEYWORD
nonn
AUTHOR
Paul D. Hanna, Feb 02 2005
STATUS
approved