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

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A108700 Number of compositions of n into odd and relatively prime parts. 2
 1, 1, 1, 3, 4, 7, 12, 21, 32, 54, 88, 141, 232, 376, 604, 987, 1596, 2576, 4180, 6762, 10932, 17710, 28656, 46347, 75020, 121392, 196384, 317808, 514228, 831978, 1346268, 2178309, 3524488, 5702886, 9227448, 14930208, 24157816, 39088168 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,4 LINKS Amiram Eldar, Table of n, a(n) for n = 1..4786 FORMULA a(n) = A007436(n) if n is odd, else a(n) = a(n/2) + A007436(n). MATHEMATICA a[n_] := a[n] = Module[{d = Divisors[n]}, m = Plus @@ (MoebiusMu /@ (n/d)*Fibonacci /@ d); If[ OddQ[n], m, a[n/2] + m]]; Table[ a[n], {n, 38}] (* Robert G. Wilson v, Jun 21 2005 *) CROSSREFS Cf. A000740, A007436. Sequence in context: A293642 A214286 A340359 * A325851 A062202 A049859 Adjacent sequences: A108697 A108698 A108699 * A108701 A108702 A108703 KEYWORD easy,nonn AUTHOR Vladeta Jovovic, Jun 19 2005 EXTENSIONS More terms from Robert G. Wilson v, Jun 21 2005 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 March 27 12:09 EDT 2023. Contains 361570 sequences. (Running on oeis4.)