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 A105314 #11 Jul 27 2017 03:07:36 %S A105314 1,4,9,22,40,62,88,118,152,190,253,322,397,478,565,658,757,862,973, %T A105314 1090,1213,1342,1477,1618,1765,1918,2077,2242,2413,2590,2773,2986, %U A105314 3246,3514,3790,4074,4366,4666,4974,5290,5614,5946,6286,6634,6990,7354,7726,8106 %N A105314 Write the natural numbers as an infinite sequence of digits, starting at the left; a(n) is the subset (i.e., the position in this sequence of the "counting digits") of the first digit of the n-th square. %e A105314 integers : 1234567891011121314151617... %e A105314 1st digit : x x x x %e A105314 positions : 1 4 9 22 %o A105314 (PARI) a(n) = 1+ sum(k=1, n^2-1, #digits(k)); \\ _Michel Marcus_, Jul 27 2017 %Y A105314 Cf. A103575. %K A105314 base,easy,nonn %O A105314 1,2 %A A105314 _Alexandre Wajnberg_, Apr 25 2005 %E A105314 More terms from _Joshua Zucker_, Jun 21 2006