OFFSET
0,1
COMMENTS
A floretion-generated sequence of squares. This sequence is related to several other sequences of squares.
Floretion Algebra Multiplication Program, FAMP Code: 4ibaseiseq[ x*(+ 'i + 'j + i' + j' + 'ii' + 'jj' + 'ij' + 'ji' + e) ] where x is the sum of all (16) floretion basis vectors.
LINKS
Harvey P. Dale, Table of n, a(n) for n = 0..1000
Index entries for linear recurrences with constant coefficients, signature (-2,6,27).
FORMULA
MATHEMATICA
CoefficientList[ Series[9(3x + 1)/(1 + 2x - 6x^2 - 27x^3), {x, 0, 25}], x] (* Robert G. Wilson v, Feb 12 2005 *)
LinearRecurrence[{-2, 6, 27}, {9, 9, 36}, 40] (* Harvey P. Dale, Mar 14 2016 *)
CROSSREFS
KEYWORD
easy,nonn
AUTHOR
Creighton Dement, Feb 12 2005
EXTENSIONS
Corrected and extended by Robert G. Wilson v, Feb 12 2005
STATUS
approved