experimental-projects/oeis-research/Amiram Eldar/Colltaz with sqrt(3) or 3/u.sf

#!/usr/bin/ruby

func foo(n) {

    var count = 0
    var cons = false
    while (n != 1) {
        ++count

        if (n %% 3) {       #%
            n //= 3         #/
            cons = false
        }
        else {
            if (cons) {
                return -1
            }
            n = floor(n * sqrt(3)).int
            cons = true
        }
    }

    count

}

[696922987, 1207106023, 2090768962, 3632578906, 6291811228, 10897736719, 18875433685].each{|k|
    say (k, " => ", foo(k))
}