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A138281 Floor((sqrt(2)+sqrt(3))^n). 4
1, 3, 9, 31, 97, 308, 969, 3051, 9601, 30210, 95049, 299052, 940897, 2960313, 9313929, 29304086, 92198402, 290080547, 912670090 (list; graph; refs; listen; history; internal format)
OFFSET

0,2

COMMENTS

a(2*n) = floor(A001079(n) + A001078(n)*sqrt(6));

(sqrt(2)+sqrt(3))^(2*n)=A001079(n)+A001078(n)*sqrt(6);

a(2*n+1) = floor(A054320(n)*sqrt(2) + A138288(n)*sqrt(3));

(sqrt(2)+sqrt(3))^(2*n+1)=A054320(n)*sqrt(2)+A138288(n)*sqrt(3).

CROSSREFS

Cf. A089078, A110117, A121503, A135611, A135798.

Sequence in context: A018370 A183519 A001672 * A049416 A148959 A148960

Adjacent sequences:  A138278 A138279 A138280 * A138282 A138283 A138284

KEYWORD

nonn

AUTHOR

Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Mar 12 2008

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Last modified February 16 01:31 EST 2012. Contains 205860 sequences.