You found this on a Dream Address? You didn't happen to run into Wendell over there did you? Sometimes you can find him in the dreamscape/town and he'll be carrying a bunch of different qr patterns from the town. It's worth checking out the town again. That's all the help I can give...sorry.
I found it on a tumblr blog, but its an old page and there DA hasn't been updated. :s
The persons tumblr:Could you link me to the Tumblr post?
Oh, that's hard. The Tumblr didn't make the path and doesn't have it reblogged on her blog either, so that doesn't make it much easier.
I know this path, but I've no clue how to find it. I'll let you know if I do manage to find it though!
OKAY WAIT
I found the brown version... Just give me a minute and I should get the white one too.
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Well, here's the brown version...
http://merongcrossing.tumblr.com/image/51093847405
I somehow can't find the white one, mainly because the post doesn't have the original source credited. :/
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Here's the Japanese title (the QR code's name) in case it helps... クローバータイル
I tried searching the title, but that didn't help either.