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!)
 A008341 a(n)=1, a(n+1) = lcm(a(n),b(n)) / gcd(a(n),b(n)), where {b(n)} = {fibonacci(n)}. 2
 1, 1, 1, 2, 6, 30, 60, 780, 1820, 15470, 34034, 3029026, 109044936, 25407470088, 56678202504, 8643425881860, 19344810307020, 30893662060310940, 17264105268997290, 72181224129677669490 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,4 LINKS MAPLE with(combinat): A008341 := proc(n) option remember; if n = 1 then 1 else lcm(A008341(n-1), fibonacci(n-1))/gcd(A008341(n-1), fibonacci(n-1)); fi; end; MATHEMATICA FoldList[ LCM[ #1, #2 ]/GCD[ #1, #2 ]&, 1, Nest[ Join[ #1, {Plus@@Take[ #1, -2 ]} ]&, {1, 1}, 20 ] ] CROSSREFS Sequence in context: A298759 A127517 A137825 * A211889 A174276 A117849 Adjacent sequences:  A008338 A008339 A008340 * A008342 A008343 A008344 KEYWORD nonn AUTHOR EXTENSIONS Mathematica Program Aug 15 1997 (Olivier Gérard). 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 June 13 11:17 EDT 2021. Contains 344990 sequences. (Running on oeis4.)