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 A110212 a(n+3) = 6*a(n) - 5*a(n+2), a(0) = -1, a(1) = 5, a(2) = -25. 3
 -1, 5, -25, 119, -565, 2675, -12661, 59915, -283525, 1341659, -6348805, 30042875, -142164421, 672729275, -3183389125, 15063959099, -71283419845, 337316764475, -1596200067781, 7553299819835, -35742598512325, 169135792154939, -800359161855685, 3787340218204475 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,2 COMMENTS Superseeker finds: a(n+1) - a(n) = ((-1)^n)*A030192(n+1) (Scaled Chebyshev U-polynomial evaluated at sqrt(6)/2) LINKS FORMULA G.f. 1/((x-1)*(6*x^2+6*x+1) MAPLE eriestolist(series(1/((x-1)*(6*x^2+6*x+1)), x=0, 25)); -or- Floretion Algebra Multiplication Program, FAMP Code: 2basejsumseq[A*B] with A = + 'i + 'ii' + 'ij' + 'ik' and B = + .5'i - .5'j + .5'k + .5i' + .5j' - .5k' - .5'ij' - .5'ik' + .5'ji' + .5'ki' Sumtype is set to: sum[(Y[0], Y[1], Y[2]), mod(3) CROSSREFS Cf. A030192, A110210, A110211, A110213. Sequence in context: A244828 A238808 A034274 * A344097 A268940 A269636 Adjacent sequences:  A110209 A110210 A110211 * A110213 A110214 A110215 KEYWORD easy,sign AUTHOR Creighton Dement, Jul 16 2005 STATUS approved

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Last modified July 29 17:41 EDT 2021. Contains 346346 sequences. (Running on oeis4.)