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 A143857 a(n) = n + (n+1)*(n+2)^(n+3). 3
 8, 163, 3074, 62503, 1399684, 34588811, 939524102, 27894275215, 900000000008, 31384283767219, 1176925259169802, 47248516628391479, 2022385242251558924, 91957716979980468763, 4427218577690292387854, 225009351233083599856159 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,1 COMMENTS Suggested by Karl Vago's contributions to Dario Alpern's list of records. LINKS Vincenzo Librandi, Table of n, a(n) for n = 0..250 Dario A. Alpern, ECM Factorization applet records Dario A. Alpern, Factorization using the Elliptic Curve Method FORMULA a(n) = n + A061250(n+3). - R. J. Mathar, Sep 04 2008 EXAMPLE a(1) = 1+(1+1)*(1+2)^(1+3) = 1+2*3^4 = 163. MAPLE A143857:=n->n+(n+1)*(n+2)^(n+3); seq(A143857(n), n=0..20); # Wesley Ivan Hurt, Mar 20 2014 MATHEMATICA Table[n + (n+1)*(n+2)^(n+3), {n, 0, 20}] (* Vincenzo Librandi, Mar 20 2014 *) PROG (MAGMA) [n+(n+1)*(n+2)^(n+3): n in [0..20]]; // Vincenzo Librandi, Dec 27 2010 (PARI) vector(21, n, (n-1) + n*(n+1)^(n+2)) \\ G. C. Greubel, Nov 09 2019 (Sage) [n + (n+1)*(n+2)^(n+3) for n in (0..20)] # G. C. Greubel, Nov 09 2019 (GAP) List([0..20], n-> n + (n+1)*(n+2)^(n+3)); # G. C. Greubel, Nov 09 2019 CROSSREFS Cf. A007778, A061250. Sequence in context: A061711 A316998 A075387 * A025606 A224899 A281830 Adjacent sequences:  A143854 A143855 A143856 * A143858 A143859 A143860 KEYWORD nonn,easy AUTHOR Reinhard Zumkeller, Sep 03 2008 STATUS approved

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Last modified June 28 12:59 EDT 2022. Contains 354907 sequences. (Running on oeis4.)