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 A061111 #22 Jan 22 2023 04:23:33 %S A061111 1,25,9712,8685582839,70309163442200949867268191808152, %T A061111 83387750596937905713672379983426538301395131506141618968183314995065134642469485779065066952875 %N A061111 a(1) = 1; a(n) = smallest number such that the concatenation a(1).0^*.a(2).0^*....0^*.a(n) is a perfect cube (where any number of 0's can be inserted between the terms). %C A061111 The implication is that 10...01, 10...02, 10...03, ..., 10...024 are never cubes for any number of internal zeros, while 125 IS a cube, so a(2) = 25. - _N. J. A. Sloane_, Jul 21 2001 %H A061111 Sean A. Irvine and Jon E. Schoenfield, <a href="/A061111/b061111.txt">Table of n, a(n) for n = 1..8</a> %H A061111 Amarnath Murthy, <a href="http://fs.unm.edu/SNJ11.pdf">Exploring some new ideas on Smarandache type sets, functions and sequences</a>, Smarandache Notions Journal Vol. 11, No. 1-2-3, Spring 2000, pp. 171-183. %e A061111 a(1) = 1, a(1).a(2) = 125 = 5^3, a(1).a(2).a(3) = 1259712 = 108^3, a(1).a(2).a(3).a(4) = 232679^3. %Y A061111 Cf. A061109, A051671, A061110. %K A061111 base,nonn %O A061111 1,2 %A A061111 _Amarnath Murthy_, Apr 20 2001 %E A061111 Offset and a(4) corrected and more terms from _Sean A. Irvine_, Jan 21 2023