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 A112866 If a(n-1) is the i-th Fibonacci number then a(n)=Fibonacci(i+a(n-2)); with a(1)=1, a(2)=2 and where we use the following nonstandard indexing for the Fibonacci numbers: f(n)=f(n-1)+f(n-2), f(1)=1, f(2)=2 (cf. A000045). 3
 1, 2, 3, 8, 34, 1597, 20365011074 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 COMMENTS The next term has 345 digits and is not displayed here. LINKS EXAMPLE a(5)=Fibonacci(5+3)=34 because a(4) is 5th Fibonacci number and a(3)=3 MAPLE f := proc(n)     combinat[fibonacci](n+1) ; end proc: Fidx := proc(n)     for i from 1 do         if f(i) = n then             return i;         elif f(i) > n then             return -1 ;         end if;     end do: end proc: A112866 := proc(n)     option remember;     if n<= 2 then         n;     else         i := Fidx(procname(n-1)) ;         f( i+procname(n-2)) ;     end if: end proc: # R. J. Mathar, Nov 26 2011 CROSSREFS Cf. A112237, A000045, A112601. Sequence in context: A084908 A078742 A005370 * A041657 A191274 A041789 Adjacent sequences:  A112863 A112864 A112865 * A112867 A112868 A112869 KEYWORD nonn AUTHOR Yasutoshi Kohmoto, Dec 25 2005 STATUS approved

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Last modified January 18 10:47 EST 2022. Contains 350454 sequences. (Running on oeis4.)