login
This site is supported by donations to The OEIS Foundation.

 

Logo

Invitation: celebrating 50 years of OEIS, 250000 sequences, and Sloane's 75th, there will be a conference at DIMACS, Rutgers, Oct 9-10 2014.

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A113804 Numbers that are congruent to 4 or 10 mod 14. 5
4, 10, 18, 24, 32, 38, 46, 52, 60, 66, 74, 80, 88, 94, 102, 108, 116, 122, 130, 136, 144, 150, 158, 164, 172, 178, 186, 192, 200, 206, 214, 220, 228, 234, 242, 248, 256, 262, 270, 276, 284, 290, 298, 304, 312, 318, 326, 332, 340, 346, 354, 360 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Fourth row of the 7-rowed array A113807. [From Giovanni Teofilatto, Oct 26 2009] [Crossref added by W. Lang, Dec 15 2011]

LINKS

Table of n, a(n) for n=1..52.

Index to sequences with linear recurrences with constant coefficients, signature (1,1,-1).

FORMULA

a(n)=7n-((-1)^n+7)/2. G.f.: 2x(2+3x+2x^2)/((1-x)^2*(1+x)). [From R. J. Mathar, Aug 13 2008]

a(n)=14*n-a(n-1)-14 (with a(1)=4) [From Vincenzo Librandi, Aug 01 2010]

PROG

(PARI) a(n)=7*n-((-1)^n+7)/2 \\ Charles R Greathouse IV, Dec 27 2011

CROSSREFS

Cf. A113801, A113802, A113803, A113805, A113806, A008589, A113807.

Sequence in context: A008147 A108726 A079287 * A107372 A113420 A053767

Adjacent sequences:  A113801 A113802 A113803 * A113805 A113806 A113807

KEYWORD

nonn,easy

AUTHOR

Giovanni Teofilatto, Jan 22 2006

EXTENSIONS

More terms from Neven Juric, Apr 10 2008

STATUS

approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Transforms | Superseeker | Recent | More pages
The OEIS Community | Maintained by The OEIS Foundation Inc.

Content is available under The OEIS End-User License Agreement .

Last modified July 26 05:08 EDT 2014. Contains 244924 sequences.