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 A077300 #6 May 14 2025 17:43:31 %S A077300 1234567891011,12131,4151,6171819202122,2324,252,6272,829303132, %T A077300 33343536373,83940414243,4445,46474849505,15253,5455565758596061626, %U A077300 364,6566,6768697071727374,7576777879808182838485,868,78889909,192939495 %N A077300 Partition the concatenation 1234567...of natural numbers into successive strings which are multiples of 7, all different and > 7 (0 is never taken as the most significant digit). %Y A077300 Cf. A077293, A077294, A077295, A077296, A077297, A077298, A077299, A077301, A077302. %K A077300 base,nonn %O A077300 1,1 %A A077300 _Amarnath Murthy_, Nov 03 2002 %E A077300 More terms from _Sam Alexander_, Jan 02 2004 %E A077300 Offset changed by _Sean A. Irvine_, May 14 2025