The OEIS is supported by the many generous donors to the OEIS Foundation.

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A091084 a(n) = A001045(n) mod 10. 3
 0, 1, 1, 3, 5, 1, 1, 3, 5, 1, 1, 3, 5, 1, 1, 3, 5, 1, 1, 3, 5, 1, 1, 3, 5, 1, 1, 3, 5, 1, 1, 3, 5, 1, 1, 3, 5, 1, 1, 3, 5, 1, 1, 3, 5, 1, 1, 3, 5, 1, 1, 3, 5, 1, 1, 3, 5, 1, 1, 3, 5, 1, 1, 3, 5, 1, 1, 3, 5, 1, 1, 3, 5, 1, 1, 3, 5, 1, 1, 3, 5, 1, 1, 3, 5, 1, 1, 3, 5, 1, 1, 3, 5, 1, 1, 3, 5, 1, 1, 3, 5, 1, 1, 3, 5 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,4 COMMENTS A001045(0), followed by A001045(1), A001045(2), A001045(3), A001045(4) repeating. LINKS Index entries for linear recurrences with constant coefficients, signature (0,0,0,1). FORMULA G.f.: x(1+x+3x^2+5x^3)/(1-x^4); E.g.f.: 2cos(x)-sin(x)+exp(-x)/2+5exp(x)/2-5; a(n)=2cos(pi*n/2)-sin(pi*n/2)+(-1)^n/2+5/2-5*0^n. a(n)=-(1/12)*{(n mod 4)+[(n+1) mod 4]-5*[(n+2) mod 4]-17*[(n+3) mod 4]}-5*[C(2*n,n) mod 2], with n>=0 - Paolo P. Lava, Jul 16 2008 MATHEMATICA CoefficientList[Series[x (1+x+3x^2+5x^3)/(1-x^4), {x, 0, 150}], x] (* Harvey P. Dale, Mar 26 2011 *) CROSSREFS Cf. A001045. Sequence in context: A123701 A143303 A074903 * A016610 A356551 A305470 Adjacent sequences: A091081 A091082 A091083 * A091085 A091086 A091087 KEYWORD easy,nonn AUTHOR Paul Barry, Dec 18 2003 STATUS approved

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

Last modified February 2 06:48 EST 2023. Contains 360000 sequences. (Running on oeis4.)