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 A110147 10^((n^2-n)/2). 2

%I

%S 1,1,10,1000,1000000,10000000000,1000000000000000,

%T 1000000000000000000000,10000000000000000000000000000,

%U 1000000000000000000000000000000000000

%N 10^((n^2-n)/2).

%C Sequence given by the Hankel transform (see A001906 for definition) of A082148 = {1, 1, 11, 131, 1661, 22101, 305151, 4335711, ...}; example : det([1, 1, 11, 131; 1, 11, 131, 1661; 11, 131, 1661, 22101; 131, 1661, 22101, 305151]) = 10^6 = 1000000.

%F a(n+1) is the determinant of n X n matrix M_(i, j) = binomial(10i, j).

%F a(n)=10a(n-1)^2/a(n-2), a(0)=a(1)=1. - Michael Somos Sep 12 2005

%o (PARI) a(n)=10^binomial(n,2) \\ _Charles R Greathouse IV_, Jan 17 2012

%Y Cf. A006125, A047656, A053763, A053764, A109345, A109354, A109493, A109966.

%K nonn,easy

%O 0,3

%A _Philippe DELEHAM_, Sep 04 2005

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