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 A064228 #21 Feb 26 2023 16:37:13 %S A064228 0,1,2,4,19,61,879,1355,2406 %N A064228 From Recamán's sequence (A005132): values of n achieving records in A057167. %C A064228 If R(n) is the n-th term of Recamán's sequence (A005132), sequence gives values of R(n) that take a record number of steps to appear. A064227 gives corresponding values of n. %H A064228 N. J. A. Sloane, <a href="http://neilsloane.com/doc/sg.txt">My favorite integer sequences</a>, in Sequences and their Applications (Proceedings of SETA '98). %H A064228 N. J. A. Sloane, <a href="/A005132/a005132.txt">FORTRAN program for A005132, A057167, A064227, A064228</a> %H A064228 <a href="/index/Rea#Recaman">Index entries for sequences related to Recamán's sequence</a> %Y A064228 Cf. A005132, A057167, A064227. %K A064228 nonn,nice,hard %O A064228 1,3 %A A064228 _N. J. A. Sloane_, Sep 22 2001 %E A064228 a(8) and a(9) from _Allan Wilks_, Nov 06 2001. After 10^15 terms of A005132, the smallest missing number was 852655. %E A064228 After 10^25 terms of A005132 the smallest missing number is still 852655. - _Benjamin Chaffin_, Jun 13 2006 %E A064228 Even after 4.28*10^73 terms, the smallest missing number is still 852655. - _Benjamin Chaffin_, Mar 22 2010 %E A064228 Even after 10^230 terms, the smallest missing number is still 852655. - _Benjamin Chaffin_, 2018 %E A064228 Initial term 0 added by _N. J. A. Sloane_, Feb 26 2023