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

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A304577 Period 21: repeat (0,0,0,0,1,1,1,1,1,0,1,0,1,0,0,1,1,0,0,0,1). 0
 0, 0, 0, 0, 1, 1, 1, 1, 1, 0, 1, 0, 1, 0, 0, 1, 1, 0, 0, 0, 1, 0, 0, 0, 0, 1, 1, 1, 1, 1, 0, 1, 0, 1, 0, 0, 1, 1, 0, 0, 0, 1, 0, 0, 0, 0, 1, 1, 1, 1, 1, 0, 1, 0, 1, 0, 0, 1, 1, 0, 0, 0, 1, 0, 0, 0, 0, 1, 1, 1, 1, 1, 0, 1, 0, 1, 0, 0, 1, 1, 0, 0, 0, 1 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0 LINKS Michael R. Bush and Danjoseph Quijada, Period sets of linear recurrence over finite fields and related commutative rings, arXiv:1805.03238 [math.NT], 2018 (see Remark 3.7, page 13). FORMULA G.f.: x^4*(1+x+x^2+x^3+x^4+x^6+x^8+x^11+x^12+x^16)/(1-x^21). a(n) = a(n-21) for n >= 21. MATHEMATICA CoefficientList[Series[(x^4 (1 + x + x^2 + x^3 + x^4 + x^6 + x^8 + x^11 + x^12 + x^16))/(1 - x^21), {x, 0, 100}], x] PROG (MAGMA) &cat[[0, 0, 0, 0, 1, 1, 1, 1, 1, 0, 1, 0, 1, 0, 0, 1, 1, 0, 0, 0, 1]^^4]; CROSSREFS Sequence in context: A011663 A091247 A085137 * A194670 A130543 A193243 Adjacent sequences:  A304574 A304575 A304576 * A304578 A304579 A304580 KEYWORD nonn,easy AUTHOR Vincenzo Librandi, May 15 2018 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.

Last modified September 23 09:03 EDT 2020. Contains 337298 sequences. (Running on oeis4.)