HP 38G: Better than Prime for some Sequences using the built in Sequence App

[BruceH]

(03-07-2015 06:02 AM)Gerald H Wrote:  ... & it's a poor comment on the Prime adepts that they can't find a way to obviate the problem.

No good deed goes unpunished, as they say.

By way of revenge I offer you this:

Code:

EXPORT TT(n)
BEGIN
  IF N<=2 THEN
    RETURN(1);
  ELSE
    RETURN(TT(TT(n-1))*TT(n-TT(n-1)); //typo: should be + not * - thanks to Thomas below
  END;
END;

and set

Code:

U1(1)=1
U1(2)=1
U1(N)=TT(N)

in the Sequence symbolic view.

Could you check the value for U1(99) for me please? ;-)