This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A154779 #5 Jul 14 2012 11:32:22
%S A154779 1,1,2,2,4,6,12,17,34,55,98,161,288,448,811,1265,2145,3425,5860,9305,
%T A154779 15384,24690,40445,64715
%N A154779 Number of terms with n digits in A154780.
%C A154779 Does the ratio of consecutive terms, a(n+1)/a(n), tend to a finite limit?
%o A154779 (PARI) print1("1,",#last=[35]); for(d=3,30, new=[]; forprime( p=0,9, for(k=1,#last, isprime((last[k]^2\10^d+t*last[k]/5)%10) & new=concat(new,last[k]+p*10^(d-1)))); print1(",",#last=new))
%K A154779 nonn,base
%O A154779 1,3
%A A154779 _M. F. Hasler_, Jan 24 2009