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 A244631 19*n^2. 4
 0, 19, 76, 171, 304, 475, 684, 931, 1216, 1539, 1900, 2299, 2736, 3211, 3724, 4275, 4864, 5491, 6156, 6859, 7600, 8379, 9196, 10051, 10944, 11875, 12844, 13851, 14896, 15979, 17100, 18259, 19456, 20691, 21964, 23275, 24624, 26011, 27436, 28899, 30400 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,2 COMMENTS First bisection of A195048. - Bruno Berselli, Jul 03 2014 LINKS Vincenzo Librandi, Table of n, a(n) for n = 0..1000 Index entries for linear recurrences with constant coefficients, signature (3,-3,1). FORMULA G.f.: 19*x*(1 + x)/(1 - x)^3. a(n) = 3*a(n-1) -3*a(n-2) +a(n-3) for n>2. a(n) = 19*A000290(n). - Omar E. Pol, Jul 03 2014 MATHEMATICA Table[19 n^2, {n, 0, 40}] PROG (MAGMA) [19*n^2: n in [0..40]]; (PARI) a(n)=19*n^2 \\ Charles R Greathouse IV, Jun 17 2017 CROSSREFS Cf. A195048. Cf. similar sequences listed in A244630. Sequence in context: A290241 A159997 A073566 * A304513 A041698 A098467 Adjacent sequences:  A244628 A244629 A244630 * A244632 A244633 A244634 KEYWORD nonn,easy AUTHOR Vincenzo Librandi, Jul 03 2014 EXTENSIONS G.f. corrected by Bruno Berselli, Jul 03 2014 STATUS approved

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Last modified January 16 03:30 EST 2019. Contains 319184 sequences. (Running on oeis4.)