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

 

Logo

Annual Appeal: Today, Nov 11 2014, is the 4th anniversary of the launch of the new OEIS web site. 70,000 sequences have been added in these four years, all edited by volunteers. Please make a donation (tax deductible in the US) to help keep the OEIS running.

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A008706 Coordination sequence for 3.3.3.4.4 planar net. 20
1, 5, 10, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60, 65, 70, 75, 80, 85, 90, 95, 100, 105, 110, 115, 120, 125, 130, 135, 140, 145, 150, 155, 160, 165, 170, 175, 180, 185, 190, 195, 200, 205, 210, 215, 220 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

COMMENTS

Also the Engel expansion of exp^(1/5); cf. A006784 for the Engel expansion definition - Benoit Cloitre, Mar 03 2002

LINKS

Vincenzo Librandi, Table of n, a(n) for n = 0..10000

Index to sequences with linear recurrences with constant coefficients, signature (2,-1).

FORMULA

G.f.: (1+3x+x^2)/(1-x)^2; a(n)=0^n+5n. - Paul Barry, Jul 21 2003

PROG

(MAGMA) [0^n+5*n: n in [0..50] ]; // Vincenzo Librandi, Aug 21 2011

CROSSREFS

List of coordination sequences for uniform planar nets: A008458 (the planar net 3.3.3.3.3.3), A008486 (6^3), A008574 (4.4.4.4 and 3.4.6.4), A008576 (4.8.8), A008579 (3.6.3.6), A008706 (3.3.3.4.4), A072154 (4.6.12), A219529 (3.3.4.3.4), A250120 (3.3.3.3.6), A250122 (3.12.12).

Sequence in context: A063284 A092454 A248359 * A008587 A172336 A140233

Adjacent sequences:  A008703 A008704 A008705 * A008707 A008708 A008709

KEYWORD

nonn

AUTHOR

N. J. A. Sloane.

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 December 18 14:15 EST 2014. Contains 252161 sequences.