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 A083333 a(n)=10a(n-2)-16a(n-4). 1
 1, 1, 6, 10, 44, 84, 344, 680, 2736, 5456, 21856, 43680, 174784, 349504, 1398144, 2796160, 11184896, 22369536, 89478656, 178956800, 715828224, 1431655424, 5726623744, 11453245440, 45812985856, 91625967616, 366503878656 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,3 COMMENTS A083332(n)/a(n) converges to 3. LINKS FORMULA G.f.: (1+x-4x^2)/(1-10x^2+16x^4) a(n)=A016116(n)*A001045(n+1). [From R. J. Mathar, Jul 08 2009] MATHEMATICA CoefficientList[Series[(1+x-4x^2)/(1-10x^2+16x^4), {x, 0, 30}], x] CROSSREFS Cf. A016131, A082412 (bisections). [From R. J. Mathar, Jul 13 2009] Sequence in context: A132095 A153328 A068588 * A032359 A115917 A275004 Adjacent sequences:  A083330 A083331 A083332 * A083334 A083335 A083336 KEYWORD easy,nonn AUTHOR Mario Catalani (mario.catalani(AT)unito.it), Apr 24 2003 STATUS approved

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