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 A182589 Number of p-gons in cubic curve, where p = n-th prime. 2
 8, 24, 216, 2376, 381672, 5163480, 1010595960, 14467313448, 3059511345864, 9938978525015640, 148764065249108232, 510526106263606993560, 117943982401534505983800, 1799331452450089752726504, 421426396352475869646014856, 1530747894615220749248821030680 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 LINKS M. Picquet, Applications de la représentation des courbes du troisième degré, Journal de l'École Polytechnique, Paris, 35 (1884), 31-100. FORMULA a(n) = 8*(2^(p-2)+1)*(2^(p-1)-1)/p where p = n-th prime. PROG (PARI) a(n) = my(p=prime(n)); 8*(2^(p-2)+1)*(2^(p-1)-1)/p; \\ Michel Marcus, Dec 10 2014 (Magma) [8*(2^(p-2)+1)*(2^(p-1)-1)/p: p in PrimesUpTo(60)]; // Vincenzo Librandi, Dec 11 2014 CROSSREFS A subsequence of A005782. Cf. A200905. Sequence in context: A221784 A052656 A094061 * A002268 A050893 A037025 Adjacent sequences: A182586 A182587 A182588 * A182590 A182591 A182592 KEYWORD nonn AUTHOR N. J. A. Sloane, Nov 23 2011 STATUS approved

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Last modified December 8 12:03 EST 2022. Contains 358693 sequences. (Running on oeis4.)