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 A077299 #11 May 14 2025 17:46:55 %S A077299 12,3456,78,9101112,1314,15161718,1920,21222,324,252,627282,930,3132, %T A077299 33343536,3738,39404142,4344,45464748,4950,51525354,5556,57585960, %U A077299 6162,636,4656,66,768,69707172,7374,75767778,7980,81828,384,858,687888,990 %N A077299 Partition the concatenation 1234567...of natural numbers into successive strings which are multiples of 6, all different and > 6. (0 never taken as the most significant digit.) %Y A077299 Cf. A077293, A077294, A077295, A077296, A077297, A077298, A077300, A077301, A077302. %K A077299 base,nonn %O A077299 1,1 %A A077299 _Amarnath Murthy_, Nov 03 2002 %E A077299 Corrected and extended by _R. J. Mathar_, Mar 13 2006 %E A077299 Offset changed by _Sean A. Irvine_, May 14 2025