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 A135428 a(n) = 9^n * 10^(n^2). 1
 1, 90, 810000, 729000000000, 65610000000000000000, 590490000000000000000000000000, 531441000000000000000000000000000000000000 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,2 COMMENTS Hankel transform of A132897. LINKS Vincenzo Librandi, Table of n, a(n) for n = 0..30 FORMULA a(n) = 9^n*10^(n^2) = A001019(n)*A076782(n). MATHEMATICA Table[9^n * 10^(n^2), {n, 0, 10}] (* G. C. Greubel, Oct 14 2016 *) PROG (MAGMA) [9^n*10^(n^2): n in [0..10]]; // Vincenzo Librandi, May 26 2011 CROSSREFS Cf. A001019, A076782, A132897. Sequence in context: A172671 A066784 A135321 * A028672 A172650 A252093 Adjacent sequences:  A135425 A135426 A135427 * A135429 A135430 A135431 KEYWORD nonn AUTHOR Philippe Deléham, Dec 12 2007 STATUS approved

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Last modified December 7 20:40 EST 2021. Contains 349589 sequences. (Running on oeis4.)