OFFSET
0,2
LINKS
N. J. A. Sloane, A Nasty Surprise in a Sequence and Other OEIS Stories, Experimental Mathematics Seminar, Rutgers University, Oct 10 2024, Youtube video; Slides [Mentions this sequence]
FORMULA
a(0)=1; for n>0, a(n) = A376043(n)*a(n-1)^2 + a(n-1)).
More directly, a(n) = Prod_(i=0..n-1} A376043(i).
- N. J. A. Sloane, Sep 12 2024
MATHEMATICA
s[1] = 1; s[n_] := s[n] = 1 + Floor[s[n-1]/(1 - Sum[s[i-1]/s[i], {i, 2, n-1}])]; a[0] = 1; a[n_] := Denominator[Sum[s[i]/s[i+1], {i, 1, n}]]; Array[a, 7, 0] (* Amiram Eldar, Sep 08 2024 *)
CROSSREFS
KEYWORD
nonn,changed
AUTHOR
N. J. A. Sloane, Sep 07 2024
STATUS
approved