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 A276706 #8 Sep 20 2016 13:35:56 %S A276706 1,2,4,5,6,7,8,10,14,16,20,22,26,28,32,34,38,40,44,46,50,52,56,58,62, %T A276706 64,68,70,74,76,80,82,86,88,92,94,98,100,104,106,110,112,116,118,122, %U A276706 124,128,130,134,136,140,142,146,148,152,154,158,160,164,166 %N A276706 Indices of records in A249860. %C A276706 The records corresponding to the indices are in A276705. %F A276706 Conjectures: (Start) %F A276706 a(n) = a(n-1)+a(n-2)-a(n-3) for n>3. %F A276706 a(n) = (6*n-27-(-1)^n)/2 for n>6. %F A276706 G.f.: x*(1+x+x^2-x^4+x^7+3*x^8) / ((1-x)^2*(1+x)). %F A276706 (End) %o A276706 (PARI) lista(nn) = {rec = 0; for (n=1, nn, an = lcm(n-3, n+3); if (an > rec, rec = an; print1(n, ", ")););} \\ _Michel Marcus_, Sep 16 2016 %Y A276706 Cf. A249860, A276705. %K A276706 nonn %O A276706 1,2 %A A276706 _Colin Barker_, Sep 15 2016