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A135398
a(n) = 3^n * 4^(n^2).
1
1, 12, 2304, 7077888, 347892350976, 273593677362757632, 3442605166011971360784384, 693087965674784425268322477539328, 2232592609368277258783200799359831235362816
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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
A372343
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 September 17 18:03 EDT 2024. Contains 375990 sequences. (Running on oeis4.)