OFFSET
1,1
EXAMPLE
a(1) = 2 because round(b(1)) = 2;
a(2) = 3 because round(2^(2^(1/2))) = 3;
a(3) = 4 because round(b(2)^(b(2)^(1/b(2)))) = 4.
MATHEMATICA
Round@ NestList[#^Power[#, 1/#] &, 2, 12] (* Michael De Vlieger, Nov 18 2019 *)
PROG
(JavaScript)
var x = 2;
var g = [];
for (var i = 0; i < 400; i++) {
x=Math.pow(x, Math.pow(x, 1/x));
appendItem(g, Math.round(x));
}
console.log(g);
CROSSREFS
KEYWORD
nonn
AUTHOR
Sebastian F. Orellana, Nov 05 2019
STATUS
approved