A356083 - OEIS

A356083

Matula-Goebel number of the complete ternary tree of n levels.

1, 8, 6859, 328951971956791, 1658040970678649782777422161327743110829397625479

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,2

LINKS

FORMULA

a(n) = prime(a(n-1))^3, for n>=2.

EXAMPLE

For n=3, the complete ternary tree of 3 levels is

6859

/ | \ a(3) = prime(8)^3

8 8 8 = 6859

/|\ /|\ /|\

1 1 1 1 1 1 1 1 1

PROG

(PARI) a(n) = my(ret=1); for(i=2, n, ret=prime(ret)^3); ret;

CROSSREFS

Cf. A007097, A356082 (binary), A356084 (quaternary).

KEYWORD

nonn,more

AUTHOR

Kevin Ryde, Jul 27 2022

EXTENSIONS

a(5) from Jinyuan Wang, Jul 27 2022

STATUS

approved