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 A092810 Binomial transform of a Jacobsthal trisection. 2
 1, 6, 54, 486, 4374, 39366, 354294, 3188646, 28697814, 258280326, 2324522934, 20920706406, 188286357654, 1694577218886, 15251194969974, 137260754729766, 1235346792567894, 11118121133111046, 100063090197999414, 900567811781994726, 8105110306037952534 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,2 COMMENTS Binomial transform of A082311. LINKS Index entries for linear recurrences with constant coefficients, signature (9). FORMULA G.f.: (1-3*x)/(1-9*x). E.g.f.: 2*exp(9*x)/3 + 1/3. a(n) = 2*9^n/3 + 0^n/3. a(n) = A054878(2n+1) - A054878(2n-1) + 0^n/3 = A015518(2n+1) - A015518(2n-1) + 0^n/3. a(n) = 2*3^(2*n-1), for n>0. - Gionata Neri, Jun 18 2015 MATHEMATICA Table[EulerPhi[9^n], {n, 0, 40}] (* Vladimir Joseph Stephan Orlovsky, Nov 10 2009 *) PROG (PARI) Vec((1-3*x)/(1-9*x) + O(x^30)) \\ Michel Marcus, Jun 18 2015 (MAGMA) [1] cat [2*3^(2*n-1): n in [1..20]]; // Vincenzo Librandi, Jun 20 2015 CROSSREFS Cf. A001045. Sequence in context: A065088 A202364 A177484 * A092472 A228413 A098658 Adjacent sequences:  A092807 A092808 A092809 * A092811 A092812 A092813 KEYWORD easy,nonn AUTHOR Paul Barry, Mar 10 2004 STATUS approved

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Last modified September 18 23:30 EDT 2020. Contains 337175 sequences. (Running on oeis4.)