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A135321
a(n) = 10^n * 9^(n^2).
2
1, 90, 656100, 387420489000, 18530201888518410000, 71789798769185258877024900000, 22528399544939174411840147874772641000000
OFFSET
0,2
COMMENTS
Hankel transform of A131521.
LINKS
FORMULA
a(n) = 10^n * 9^(n^2) = A011557(n) * A060761(n).
MATHEMATICA
Table[10^n * 9^(n^2), {n, 0, 10}] (* G. C. Greubel, Oct 09 2016 *)
PROG
(Magma) [10^n*9^(n^2): n in [0..10]]; // Vincenzo Librandi, May 31 2011
(PARI) a(n)=10^n*9^(n^2) \\ Charles R Greathouse IV, Oct 09 2016
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
Philippe Deléham, Dec 06 2007
STATUS
approved