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 A121814 A 3 X 3 determinant based recursion. 1
 0, 1, 1, -2, 0, 7, -335, 37595032, -53136308105121335327856, 150028625138472351236334849506272469590820016866180023237071134409583 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,4 COMMENTS For n >= 3, a(n) is the determinant of the matrix [a(n-3),a(n-1),a(n-2)] [a(n-1),a(n-2),a(n-3)] [a(n-2),a(n-3),a(n-1)]. - Robert Israel, Nov 13 2017 LINKS Robert Israel, Table of n, a(n) for n = 1..12 FORMULA a(n) = 3*a(n-1)*a(n-2)*a(n-3)-a(n-1)^3-a(n-2)^3-a(n-3)^3 for n >= 4. MAPLE A[1]:= 0: A[2]:= 1: A[3]:= 1: for n from 4 to 12 do A[n]:= LinearAlgebra:-Determinant(<||>) od: seq(A[i], i=1..12); # Robert Israel, Nov 13 2017 MATHEMATICA M = {{a[n - 3], a[n - 1], a[n - 2]}, {a[n - 1], a[n - 2], a[n - 3]}, {a[n - 2], a[n - 3], a[n - 1]}}; a[0] = 0; a[1] = 1; a[2] = 1; a[n_] := a[n] = Det[M] b = Table[a[n], {n, 0, 10}] CROSSREFS Sequence in context: A016631 A164269 A293265 * A195298 A010581 A356920 Adjacent sequences: A121811 A121812 A121813 * A121815 A121816 A121817 KEYWORD sign AUTHOR Roger L. Bagula, Aug 30 2006 EXTENSIONS Edited by Robert Israel, Nov 13 2017 STATUS approved

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Last modified February 27 04:33 EST 2024. Contains 370362 sequences. (Running on oeis4.)