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 A135321 a(n) = 10^n * 9^(n^2). 2
 1, 90, 656100, 387420489000, 18530201888518410000, 71789798769185258877024900000, 22528399544939174411840147874772641000000 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,2 COMMENTS Hankel transform of A131521. LINKS Vincenzo Librandi, Table of n, a(n) for n = 0..30 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 Cf. A011557, A060761, A131521. Sequence in context: A052277 A172671 A066784 * A135428 A028672 A172650 Adjacent sequences:  A135318 A135319 A135320 * A135322 A135323 A135324 KEYWORD nonn,easy AUTHOR Philippe Deléham, Dec 06 2007 STATUS approved

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Last modified January 27 21:45 EST 2022. Contains 350654 sequences. (Running on oeis4.)