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 A077297 #8 May 14 2025 17:45:45 %S A077297 12,3456,789101112,13141516,17181920,212,2232,4252,6272,8,29303132, %T A077297 33343536,37383940,41424,344,45464,748,49505152,53545556,57585960,616, %U A077297 2636,4656,6676,869707172,73747576,77787980,81828,384,85868,788 %N A077297 Partition the concatenation 1234567...of natural numbers into successive strings which are multiples of 4, all different and > 4. (0 never taken as the most significant digit.) %Y A077297 Cf. A077293, A077294, A077295, A077296, A077298, A077299, A077300, A077301, A077302. %K A077297 base,nonn %O A077297 1,1 %A A077297 _Amarnath Murthy_, Nov 03 2002 %E A077297 Corrected and extended by _Franklin T. Adams-Watters_, May 30 2006 %E A077297 Offset changed by _Sean A. Irvine_, May 14 2025