104.131.18.228 is the IP address of my seednode as is configured as follows;
unsigned int pnSeed[] =
{
0x688312e4
};
I am fairly certain this is your problem. I believe that you have to reverse the IP address, so your pnSeed should be 0xe4128368.
Here is a perl script I found that will do this for you:
#!/usr/bin/perl
# Twobits twobit integer dotted quad to reverse hex convertor
# designed for q&d use to put seeds into pnSeeds in *coins
my $ip;
if (@ARGV) {
$ip = shift @ARGV;
} else {
print "Enter an (dotted quad) ip address: ";
chomp( $ip = );
}
printf "0x%08x\n", unpack 'N', pack 'C4', reverse split '\.', $ip;
I got that from this Bitcointalk comment by twobits:
https://bitcointalk.org/index.php?topic=34586.msg1983185#msg1983185