spike: >13th: 564240140138 >14th: 281164403359967 eureka moments kick. Thanks for the puzzle! (what else would you rather be doing at 5am? :) 15th: none 16th: 4338281769391371, 4338281769391370 17th: 35875699062250035, 35641594208964132, 21897142587612075, 233411150132317 I'll leave it running overnight, see how far it gets. alejandro