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A214660 9*n^2 - 11*n + 3. 2
1, 17, 51, 103, 173, 261, 367, 491, 633, 793, 971, 1167, 1381, 1613, 1863, 2131, 2417, 2721, 3043, 3383, 3741, 4117, 4511, 4923, 5353, 5801, 6267, 6751, 7253, 7773, 8311, 8867, 9441, 10033, 10643, 11271, 11917, 12581, 13263, 13963, 14681, 15417, 16171, 16943 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Central terms of triangle A214604.

LINKS

Table of n, a(n) for n=1..44.

Index entries for linear recurrences with constant coefficients, signature (3,-3,1).

PROG

(Haskell)

a214660 n = (9 * n - 11) * n + 3

(PARI) a(n)=9*n^2-11*n+3 \\ Charles R Greathouse IV, Jun 17 2017

CROSSREFS

Cf. A214675.

Sequence in context: A003124 A005570 A195037 * A258598 A223906 A146673

Adjacent sequences:  A214657 A214658 A214659 * A214661 A214662 A214663

KEYWORD

nonn,easy

AUTHOR

Reinhard Zumkeller, Jul 25 2012

STATUS

approved

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Last modified September 22 05:47 EDT 2019. Contains 327287 sequences. (Running on oeis4.)