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A121913 a(n) = 2^(n*(2*n+3)) = 2^A014106(n). 2
1, 32, 16384, 134217728, 17592186044416, 36893488147419103232, 1237940039285380274899124224, 664613997892457936451903530140172288, 5708990770823839524233143877797980545530986496 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

COMMENTS

Apparently the Hankel transform of A098441 = [1, 1, 33, 97, 1729, 8001, 105441, 627873, ...].

Hankel transform of A098430. - Philippe Deléham, Mar 01 2009

LINKS

Vincenzo Librandi, Table of n, a(n) for n = 0..40

EXAMPLE

Det(1) = 1; Det(1,1; 1,33) = 32; Det(1,1,33; 1,33,97; 33,97,1729) = 16384; ...

MAPLE

A121913:=n->2^(n*(2*n+3)); seq(A121913(k), k=0..20); # Wesley Ivan Hurt, Oct 24 2013

MATHEMATICA

Table[2^(n(2n+3)), {n, 0, 20}] (* Wesley Ivan Hurt, Oct 24 2013 *)

PROG

(MAGMA) [2^(n*(2*n+3)): n in [0..10]]; // Vincenzo Librandi, Jul 05 2011

(PARI) vector(20, n, n--; 2^(n*(2*n+3))) \\ G. C. Greubel, Oct 08 2018

CROSSREFS

Cf. A098430, A098441.

Sequence in context: A230689 A248002 A091201 * A016877 A227659 A230914

Adjacent sequences:  A121910 A121911 A121912 * A121914 A121915 A121916

KEYWORD

nonn,easy

AUTHOR

Philippe Deléham, Sep 02 2006

STATUS

approved

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Last modified February 19 18:44 EST 2020. Contains 332047 sequences. (Running on oeis4.)