Hello SeqFans, a(1)=1 a(n) is always the smallest integer > a(n-1) such that two consecutive digits in the sequence sum up to a prime: S = 1,2,3,4,7,41,43,47,49,83,85,89,202,302,303,411,412,... Could someone please check and compute this? The sequence echoes this one: http://www.research.att.com/~njas/sequences/A073627 Best, É.