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Aug 5, 2017 at 11:08 vote accept Padraig Ó Catháin
Aug 4, 2017 at 19:57 answer added Richard Stanley timeline score: 11
Aug 4, 2017 at 16:12 comment added Yaakov Baruch I found no further solutions up to $k \le 10000$.
Aug 4, 2017 at 12:50 history asked Padraig Ó Catháin CC BY-SA 3.0