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A092806 Expansion of (1 + 8x - 9x^2)/(1 - 3x + 3x^2 - 1001x^3). 1
1, 11, 21, 1031, 14041, 60051, 1170061, 17385071, 108756081, 1445344091, 21412220101, 168765465111, 1888849170121, 26593883436131, 243049333374141, 2540104369105151, 33511642426760161, 336206996880480171, 3450730536835416181, 42888724689051729191 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

COMMENTS

Binomial transform of A092804.

LINKS

T. D. Noe, Table of n, a(n) for n = 0..1000

Index entries for linear recurrences with constant coefficients, signature (3,-3,1001).

FORMULA

a(n) = 91^(n/2)*(cos(n*arccot(-4*sqrt(3)/15))/3 + sqrt(3)*sin(n*arccot(-4*sqrt(3)/15))/3) + 2*11^n/3.

CROSSREFS

Sequence in context: A110383 A123783 A163288 * A138485 A006711 A005151

Adjacent sequences:  A092803 A092804 A092805 * A092807 A092808 A092809

KEYWORD

easy,nonn

AUTHOR

Paul Barry, Mar 06 2004

STATUS

approved

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Last modified January 18 16:27 EST 2020. Contains 331011 sequences. (Running on oeis4.)