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

 

Logo

Annual Appeal: Please make a donation to keep the OEIS running. In 2017 we replaced the server with a faster one, added 20000 new sequences, and reached 7000 citations (often saying "discovered thanks to the OEIS").
Other ways to donate

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A139279 a(n) = 40*n - 32. 18
8, 48, 88, 128, 168, 208, 248, 288, 328, 368, 408, 448, 488, 528, 568, 608, 648, 688, 728, 768, 808, 848, 888, 928, 968, 1008, 1048, 1088, 1128, 1168, 1208, 1248, 1288, 1328, 1368, 1408, 1448, 1488, 1528, 1568, 1608, 1648, 1688, 1728, 1768, 1808, 1848 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Multiples of 8 with unit digit equal to 8.

LINKS

Vincenzo Librandi, Table of n, a(n) for n = 1..2000

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

FORMULA

a(n) = a(n-1) + 40.

From G. C. Greubel, Jul 18 2017: (Start)

G.f.: (72*x - 32)/(1-x)^2.

E.g.f.: (40*x - 32)*exp(x). (End)

MATHEMATICA

NestList[#+40&, 8, 50] (* Harvey P. Dale, Oct 02 2013 *)

PROG

(MAGMA) [40*n-32: n in [1..50]]; // Vincenzo Librandi, Jun 19 2011

(PARI) a(n)=40*n-32 \\ Charles R Greathouse IV, Aug 25 2014

CROSSREFS

Subsequence of A034709, together with A017281, A017293, A139222, A139245, A017329, A139249, A139264 and A139280.

Sequence in context: A216323 A165037 A121028 * A250257 A067239 A152750

Adjacent sequences:  A139276 A139277 A139278 * A139280 A139281 A139282

KEYWORD

nonn,easy

AUTHOR

Odimar Fabeny, Jun 06 2008

EXTENSIONS

More terms from Reinhard Zumkeller, Jun 22 2008

New definition from Paolo P. Lava, Sep 06 2010

STATUS

approved

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

License Agreements, Terms of Use, Privacy Policy. .

Last modified December 10 05:49 EST 2018. Contains 318044 sequences. (Running on oeis4.)