login
The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A134720 Even Padovan numbers. 2
0, 0, 0, 2, 2, 4, 12, 16, 28, 86, 114, 200, 616, 816, 1432, 4410, 5842, 10252, 31572, 41824, 73396, 226030, 299426, 525456, 1618192, 2143648, 3761840, 11584946, 15346786, 26931732, 82938844, 109870576, 192809420, 593775046, 786584466, 1380359512, 4250949112 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,4

LINKS

Table of n, a(n) for n=1..37.

Index entries for linear recurrences with constant coefficients, signature (0, 1, 1).

FORMULA

Empirical g.f.: -2*x^4*(x^4-x^3+2*x^2+x+1) / (x^9+x^6+7*x^3-1). - Colin Barker, Sep 17 2013

MATHEMATICA

Select[Join[{0, 0, 0}, LinearRecurrence[{0, 1, 1}, {1, 1, 1}, 100]], EvenQ] (* Harvey P. Dale, May 11 2011 *)

CROSSREFS

Cf. A000931.

Sequence in context: A134435 A136718 A112362 * A019225 A002840 A298477

Adjacent sequences:  A134717 A134718 A134719 * A134721 A134722 A134723

KEYWORD

easy,nonn

AUTHOR

Omar E. Pol, Nov 11 2007

EXTENSIONS

More terms from Harvey P. Dale, May 11 2011.

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 October 24 09:35 EDT 2021. Contains 348220 sequences. (Running on oeis4.)