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 A198412 a(n) = (3^(6*n) - 2^(6*n))/35. 1
 0, 19, 15067, 11061667, 8068935979, 5882573095795, 4288416187929211, 3126256706670452803, 2279041222725643804363, 1661421056715018890883091, 1211175950687522343133931035, 882947268073109296732165817059, 643668558426698629867350806558827 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,2 COMMENTS 3^6 = (3^3)^2 == (-8)^2 (mod 35) = 64 and 2^6 = 64. LINKS Vincenzo Librandi, Table of n, a(n) for n = 0..300 Index entries for linear recurrences with constant coefficients, signature (793,-46656). FORMULA a(n) = (3^(6*n) - 2^(6*n))/35. G.f.: 19*x / ( (729*x-1)*(64*x-1) ). - R. J. Mathar, Oct 25 2011 EXAMPLE a(1) = (3^(6*1) - 2^(6*1))/35 = 665/35 = 19. MAPLE for n from 0 to 30 do: x:= (3^(6*n)- 2^(6*n))/35:  printf(`%d, `, x):od: MATHEMATICA LinearRecurrence[{793, -46656}, {0, 19}, 50] (* Vincenzo Librandi, Nov 25 2011 *) Table[(3^(6n)-2^(6n))/35, {n, 0, 20}] (* Harvey P. Dale, Aug 14 2019 *) PROG (MAGMA) [(3^(6*n)- 2^(6*n))/35: n in [0..15]]; // Vincenzo Librandi, Nov 25 2011 (PARI) a(n)=(3^(6*n)-2^(6*n))/35 \\ Charles R Greathouse IV, Jul 06 2017 CROSSREFS Sequence in context: A174306 A270069 A186165 * A110392 A107100 A233233 Adjacent sequences:  A198409 A198410 A198411 * A198413 A198414 A198415 KEYWORD nonn,easy,less AUTHOR Michel Lagneau, Oct 24 2011 STATUS approved

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Last modified May 11 11:54 EDT 2021. Contains 343791 sequences. (Running on oeis4.)