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 A035075 #23 Sep 29 2021 08:56:15 %S A035075 9,29,90,283,895,2829,8945,28285,89443,282843,894428,2828428,8944272, %T A035075 28284272,89442720,282842713,894427191,2828427125,8944271910, %U A035075 28284271248,89442719100,282842712475,894427191000,2828427124747 %N A035075 a(n) = ceiling(sqrt(8*10^n)). %C A035075 Also, first term of runs of consecutive numbers whose square starts with the digit 8. %F A035075 a(n) = ceiling(sqrt(8*10^n)), n > 0. %t A035075 Ceiling[Sqrt[8*10^Range[30]]] (* _Harvey P. Dale_, Apr 12 2013 *) %o A035075 (Python) %o A035075 from math import isqrt %o A035075 def a(n): return isqrt(8*10**n) + 1 %o A035075 print([a(n) for n in range(1, 25)]) # _Michael S. Branicky_, Sep 29 2021 %Y A035075 Cf. A067478 (squares), A035069-A035076 (2..9), A045862. %K A035075 nonn,base %O A035075 1,1 %A A035075 _Patrick De Geest_, Nov 15 1998