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Jan 5, 2017 at 21:49 history edited simon CC BY-SA 3.0
added 57 characters in body
Jan 5, 2017 at 21:30 comment added BrainSteel You can make this a tad shorter by shuffling things around a bit: a(n){return--n<1?0:4*a(n)+a(n-1)+2;} (36 bytes)
Jan 5, 2017 at 13:39 history edited simon CC BY-SA 3.0
added 138 characters in body
Jan 5, 2017 at 8:41 history edited simon CC BY-SA 3.0
added 228 characters in body
Jan 4, 2017 at 22:26 review First posts
Jan 4, 2017 at 22:27
Jan 4, 2017 at 22:21 history answered simon CC BY-SA 3.0