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A017605 12n+7. 6
7, 19, 31, 43, 55, 67, 79, 91, 103, 115, 127, 139, 151, 163, 175, 187, 199, 211, 223, 235, 247, 259, 271, 283, 295, 307, 319, 331, 343, 355, 367, 379, 391, 403, 415, 427, 439, 451, 463, 475, 487, 499, 511, 523, 535, 547, 559, 571, 583, 595, 607, 619, 631 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,1

LINKS

Table of n, a(n) for n=0..52.

Tanya Khovanova, Recursive Sequences

Index entries for linear recurrences with constant coefficients, signature (2,-1).

FORMULA

a(n) = 2*(12*n+1) - a(n-1) = 2*a(n-1) - a(n-2) with a(0) = 7, a(1) = 19. - Vincenzo Librandi, Nov 19 2010

a(n) = (n+1)*A016921(n+1) - n*A016921(n). - Bruno Berselli, Jan 18 2013

MATHEMATICA

12*Range[0, 200] + 7 (* Vladimir Joseph Stephan Orlovsky, Feb 19 2011*)

PROG

(Sage) [i+7 for i in range(525) if gcd(i, 12) == 12] # Zerinvary Lajos, May 21 2009

(PARI) a(n)=12*n+7 \\ Charles R Greathouse IV, Jul 10 2016

CROSSREFS

Cf. A008594, A016921, A017533, A017545, A068229.

Sequence in context: A216133 A079740 A030549 * A126194 A068229 A071696

Adjacent sequences:  A017602 A017603 A017604 * A017606 A017607 A017608

KEYWORD

nonn,easy

AUTHOR

N. J. A. Sloane.

STATUS

approved

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Last modified April 28 05:37 EDT 2017. Contains 285557 sequences.