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 A025730 #10 Jul 06 2025 13:18:00 %S A025730 1,3,6,10,15,21,28,37,47,58,70,83,97,113,130,148,167,187,208,231,255, %T A025730 280,306,333,361,391,422,454,487,521,556,592,630,669,709,750,792,835, %U A025730 880,926,973,1021,1070,1120,1172,1225,1279,1334,1390,1447,1506,1566,1627,1689 %N A025730 Index of 8^n within sequence of numbers of form 6^i*8^j. %C A025730 Positions of zeros in A025661. - _R. J. Mathar_, Jul 06 2025 %Y A025730 Cf. A001018, A025627. %Y A025730 Differs from A025706 at a(56). %K A025730 nonn %O A025730 1,2 %A A025730 _David W. Wilson_