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A083074 n^3 - n^2 - n - 1. 5
-1, -2, 1, 14, 43, 94, 173, 286, 439, 638, 889, 1198, 1571, 2014, 2533, 3134, 3823, 4606, 5489, 6478, 7579, 8798, 10141, 11614, 13223, 14974, 16873, 18926, 21139, 23518, 26069, 28798, 31711, 34814, 38113, 41614, 45323, 49246, 53389, 57758, 62359, 67198, 72281 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

COMMENTS

Values of tribonacci polynomial n^3 - n^2 - n - 1 for n >= 0. - Artur Jasinski, Nov 19 2006

LINKS

Vincenzo Librandi, Table of n, a(n) for n = 0..780

Index entries for linear recurrences with constant coefficients, signature (4,-6,4,-1).

FORMULA

a(n) = n^3 + 5n^2 + 7n + 1 = (n(n + 2)^3 + 1)/(n + 1) [with a different offset].

MATHEMATICA

Table[n^3 - n^2 - n - 1, {n, 0, 41}] (* Artur Jasinski, Nov 19 2006 *)

PROG

(MAGMA) [n^3 - n^2 - n - 1: n in [0..60]]; // Vincenzo Librandi, Apr 26 2011

(PARI) a(n)=n^3-n^2-n-1 \\ Charles R Greathouse IV, Oct 07 2015

CROSSREFS

Apart from initial terms, a column of A083064.

Cf. A000027, A028387, A002378.

Sequence in context: A216445 A124026 A106204 * A181869 A141510 A219899

Adjacent sequences:  A083071 A083072 A083073 * A083075 A083076 A083077

KEYWORD

easy,sign

AUTHOR

Paul Barry, Apr 21 2003

EXTENSIONS

Simpler definition from Alonso del Arte, Sep 16 2004

STATUS

approved

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Last modified August 20 13:04 EDT 2017. Contains 290835 sequences.