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Problem 145
Tue, 28 Feb 2017 23:05:30 +0000, by Steve Losh
Problem 53
Tue, 28 Feb 2017 22:19:51 +0000, by Steve Losh
Problem 51 and some cleanup
Tue, 28 Feb 2017 22:12:26 +0000, by Steve Losh
Cleanup
Mon, 27 Feb 2017 17:21:42 +0000, by Steve Losh
Dat sieve
Mon, 27 Feb 2017 17:13:34 +0000, by Steve Losh
Problem 50
Mon, 27 Feb 2017 16:41:37 +0000, by Steve Losh
Problem 49
Mon, 27 Feb 2017 16:13:36 +0000, by Steve Losh
Problem 52
Mon, 27 Feb 2017 01:34:12 +0000, by Steve Losh
Problem 56
Mon, 27 Feb 2017 01:22:47 +0000, by Steve Losh
Problem 74
Mon, 27 Feb 2017 01:15:50 +0000, by Steve Losh
Problem 48
Mon, 27 Feb 2017 00:51:33 +0000, by Steve Losh
Problem 47
Mon, 27 Feb 2017 00:47:17 +0000, by Steve Losh
Problem 46
Mon, 27 Feb 2017 00:38:16 +0000, by Steve Losh
Problem 45
Mon, 27 Feb 2017 00:26:54 +0000, by Steve Losh
Problem 44
Sun, 26 Feb 2017 22:01:32 +0000, by Steve Losh
Add pentagonal helpers
Sat, 25 Feb 2017 17:42:31 +0000, by Steve Losh

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