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A134183
A Hankel transform of a Catalan product.
0
0, 1, 16, 768, 131072, 83886080, 206158430208, 1970324836974592, 73786976294838206464, 10880332376531662572355584, 6338253001141147007483516026880
OFFSET
0,3
COMMENTS
-a(n) is the Hankel transform of A000108(n)*(2^n + 0^n)/2 = A003645(n-1). The Hankel transform of A003645(n) is 4^binomial(n+1, 2).
FORMULA
a(n) = 4^binomial(n,2)*n*2^(n-1);
a(n) = A053763(n)*A001787(n).
CROSSREFS
Sequence in context: A159375 A221527 A129008 * A042109 A221061 A326216
KEYWORD
easy,nonn
AUTHOR
Paul Barry, Oct 11 2007
STATUS
approved