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 A084065 Fourth row of number array A084061. 5
 1, 1, 7, 54, 553, 7100, 109863, 1991752, 41426257, 972602640, 25447064743, 734276705888, 23166635069241, 793426715543488, 29316839407495111, 1162492244159875200, 49240280161094287777, 2218952409252783579392 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,3 LINKS G. C. Greubel, Table of n, a(n) for n = 0..300 FORMULA a(n) = ( (n - sqrt(3))^n + (n + sqrt(3))^n )/2. MAPLE seq( round(((n-sqrt(3))^n + (n+sqrt(3))^n)/2), n=0..20); # G. C. Greubel, Jan 11 2020 MATHEMATICA Table[Round[((n+Sqrt[3])^n + (n-Sqrt[3])^n)/2], {n, 0, 20}] (* G. C. Greubel, Jan 11 2020 *) PROG (PARI) vector(21, n, round(((n-1-sqrt(3))^(n-1) + (n-1+sqrt(3))^(n-1))/2) ) \\ G. C. Greubel, Jan 11 2020 (Magma) [Round(((n-Sqrt(3))^n + (n+Sqrt(3))^n)/2): n in [0..20]]; // G. C. Greubel, Jan 11 2020 (Sage) [round(((n-sqrt(3))^n + (n+sqrt(3))^n)/2) for n in (0..20)] # G. C. Greubel, Jan 11 2020 (GAP) List([0..20], n-> ((n-Sqrt(3))^n + (n+Sqrt(3))^n)/2); # G. C. Greubel, Jan 11 2020 CROSSREFS Cf. A084061, A084062, A084063, A084064, A084095, A084096. Sequence in context: A291703 A014509 A228415 * A200140 A298104 A289865 Adjacent sequences: A084062 A084063 A084064 * A084066 A084067 A084068 KEYWORD easy,nonn AUTHOR Paul Barry, May 11 2003 STATUS approved

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Last modified July 20 15:10 EDT 2024. Contains 374459 sequences. (Running on oeis4.)