cidr prefixes to usable hosts .js

const verify_v4_numHosts = [
    {input: 0, output: 4294967294},
    {input: 1, output: 2147483646},
    {input: 2, output: 1073741822},
    {input: 3, output: 536870910},
    {input: 4, output: 268435454},
    {input: 5, output: 134217726},
    {input: 6, output: 67108862},
    {input: 7, output: 33554430},
    {input: 8, output: 16777214},
    {input: 9, output: 8388606},
    {input: 10, output: 4194302},
    {input: 11, output: 2097150},
    {input: 12, output: 1048574},
    {input: 13, output: 524286},
    {input: 14, output: 262142},
    {input: 15, output: 131070},
    {input: 16, output: 65534},
    {input: 17, output: 32766},
    {input: 18, output: 16382},
    {input: 19, output: 8190},
    {input: 20, output: 4094},
    {input: 21, output: 2046},
    {input: 22, output: 1022},
    {input: 23, output: 510},
    {input: 24, output: 254},
    {input: 25, output: 126},
    {input: 26, output: 62},
    {input: 27, output: 30},
    {input: 28, output: 14},
    {input: 29, output: 6},
    {input: 30, output: 2},
    {input: 31, output: 0},
    {input: 32, output: 0}
  ];