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A103644 G.f. (3x+1)/(1+2x-6x^2-27x^3). 2
1, 1, 4, 25, 1, 256, 169, 1225, 5476, 961, 64009, 25600, 358801, 1164241, 515524, 15642025, 3243601, 101284096, 239228089, 216825625, 3736387876, 287336401, 27697946329, 47210598400 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,3

COMMENTS

A floretion-generated sequence of squares.

This sequence is also related to several other sequences of squares.

LINKS

Table of n, a(n) for n=0..23.

Creighton Dement, Online Floretion Multiplier [From Creighton Dement, May 24 2009]

Index entries for linear recurrences with constant coefficients, signature (-2,6,27).

FORMULA

a(n+3) = -2a(n+2) + 6a(n+1) + 27a(n), a(0) = 1, a(1) = 1, a(2) = 4

a(n) = (1/11)*(2*3^n-(-5/2-(I*sqrt(11))/2)^n-(-5/2+(I*sqrt(11))/2)^n) [From Creighton Dement, May 24 2009]

PROG

Floretion Algebra Multiplication Program, FAMP.

CROSSREFS

Cf. A103645.

Sequence in context: A092435 A058230 A162187 * A185070 A272680 A082202

Adjacent sequences:  A103641 A103642 A103643 * A103645 A103646 A103647

KEYWORD

nonn,easy

AUTHOR

Creighton Dement, Feb 11 2005

EXTENSIONS

Corrected by T. D. Noe, Nov 07 2006

STATUS

approved

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Last modified March 25 01:30 EDT 2017. Contains 284036 sequences.