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A135398 a(n) = 3^n * 4^(n^2). 1
1, 12, 2304, 7077888, 347892350976, 273593677362757632, 3442605166011971360784384, 693087965674784425268322477539328, 2232592609368277258783200799359831235362816 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

COMMENTS

Hankel transform of A132863 .

LINKS

G. C. Greubel, Table of n, a(n) for n = 0..25

FORMULA

a(n) = 3^n*4^(n^2) = A000244(n)*A060757(n).

MATHEMATICA

Table[3^n*4^(n^2), {n, 0, 10}] (* G. C. Greubel, Oct 12 2016 *)

PROG

(PARI) a(n)=3^n*4^n^2 \\ Charles R Greathouse IV, Oct 12 2016

CROSSREFS

Sequence in context: A205306 A268421 A129206 * A203426 A268589 A228289

Adjacent sequences:  A135395 A135396 A135397 * A135399 A135400 A135401

KEYWORD

nonn,easy

AUTHOR

Philippe Deléham, Dec 11 2007

STATUS

approved

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Last modified October 19 04:40 EDT 2019. Contains 328211 sequences. (Running on oeis4.)