22 May
2007
22 May
'07
4:37 p.m.
Hello Math-Fun, Add two consecutive terms of S: the result doesn't share any digit with the first nor the second term. Is this sequence finite? Best, É. S = 1,2,3,4,5,6,7,8,9,11,13,14,15,17,18,19,21,22,23,25... (to build the sequence, add the next integer which doesn't infringe the rule)