# Greetings from The On-Line Encyclopedia of Integer Sequences! http://oeis.org/ Search: id:a107814 Showing 1-1 of 1 %I A107814 #12 Apr 11 2020 10:40:56 %S A107814 43,3,13,11,17,7,37,23,2,29,19,31,41,47,67,61,71,73,53,5,59,79,89,83, %T A107814 103,101,107,97,109,113,127,131,137,139,149,151,157,163,167,173,179, %U A107814 181,191,193,197,199,211,223,227,229,233,239,241,251,257,263,269,271,277 %N A107814 a(1) = prime(14), for n >= 2, a(n) is the smallest prime not previously used which contains a digit from a(n-1). %C A107814 a(n) = prime(n) for almost all n. Probably a(n) = prime(n) for all n > N for some N, but N must be very large. - _Charles R Greathouse IV_, Jul 20 2011 %F A107814 a(n) ~ n log n. - _Charles R Greathouse IV_, Jul 20 2011 %t A107814 p=Prime[14];b={p};d=p;Do[Do[r=Prime[c];If[FreeQ[b, r]&&Intersection@@IntegerDigits/@{d, r}=!={}, b=Append[b, r];d=r;Break[]], {c, 1000}], {k, 60}];b %Y A107814 Cf. A107353. %Y A107814 Other cases of seed: A107801 (a(1) = 2), A107802 (a(1) = 3), A107803 (a(1) = 5), A107804 (a(1) = 7), A107805 (a(1) = 11), A107806 (a(1) = 13), A107807 (a(1) = 17), A107808 (a(1) = 19), A107809 (a(1) = 23), A107810 (a(1) = 29), A107811 (a(1) = 31), A107812 (a(1) = 37), A107813 (a(1) = 41). %K A107814 nonn,base %O A107814 1,1 %A A107814 _Zak Seidov_ and _Eric Angelini_, May 24 2005 # Content is available under The OEIS End-User License Agreement: http://oeis.org/LICENSE