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A093543
Main diagonal of square array A093541, in which column (k+1) equals the self-convolution of row k.
3
1, 2, 12, 138, 2888, 110856, 7930308, 1066762914, 269503442664, 127145506540264, 111423795046477280, 180809538057863059816, 542580059649459401231312, 3010357860273895667573920480, 30891867430474245598850484085824, 586720323003917440902757177392624562
OFFSET
0,2
LINKS
PROG
(PARI) T(n, k)=if(n==0 || k==0, 1, sum(i=0, n, T(k-1, i)*T(k-1, n-i)));
a(n)=T(n, n);
CROSSREFS
Sequence in context: A185522 A119819 A330655 * A367636 A287885 A091144
KEYWORD
nonn
AUTHOR
Paul D. Hanna, Mar 30 2004
EXTENSIONS
More terms from Jinyuan Wang, Feb 28 2020
STATUS
approved