package grains

import (
    "fmt"
)

func Square(number int) (uint64, error) {
    if number < 1 || number > 64 {
        return 0, fmt.Errorf("bad square %d (must be between 1-64)", number) 
    }
    return 1<<(number - 1), nil
}

func Total() uint64 {
    return 1<<64 - 1
}