A003820 a(1)=a(2)=1, a(n+1) = (a(n)^5 +1)/a(n-1).

1, 1, 2, 33, 19567697, 86932993422012266622767255572927826

Offset

1,3

Links

Table of n, a(n) for n=1..6.

Maple

A003820 := proc(n) option remember; if n <= 2 then 1 else (A003820(n-1)^5+1)/A003820(n-2); fi; end;

Crossrefs

Sequence in context: A034173 A132519 A117969 * A112980 A109336 A180342

Adjacent sequences: A003817 A003818 A003819 * A003821 A003822 A003823

Keyword

nonn

Author

Waldemar Pompe (pompe(AT)zodiac1.mimuw.edu.pl)

Status

approved