A066091 a(n+2) = a(n+1)*a(n)*(a(n+1)+a(n)).

1, 2, 6, 96, 58752, 331914018816, 6472527787868799987640958976, 13905078437588927055776809046479521344793888146925785597768443625472

Offset

0,2

Comments

The next term has 163 digits. - Harvey P. Dale, Dec 09 2017

Links

Harry J. Smith, Table of n, a(n) for n = 0..10

Mathematica

nxt[{a_, b_}]:={b, a*b*(a+b)}; NestList[nxt, {1, 2}, 10][[All, 1]] (* Harvey P. Dale, Dec 09 2017 *)

Prog

(PARI) { for (n=0, 10, if (n>1, a=a1*a2*(a1+a2); a2=a1; a1=a, if (n, a=a1=2, a=a2=1)); write("b066091.txt", n, " ", a) ) } \\ Harry J. Smith, Nov 12 2009

Crossrefs

Sequence in context: A372240 A007870 A081992 * A100704 A357084 A123257

Adjacent sequences: A066088 A066089 A066090 * A066092 A066093 A066094

Keyword

nonn

Author

Benoit Cloitre, Dec 30 2001

Status

approved