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 A045930 #21 Mar 08 2020 04:12:32
%S A045930 1,2,5,8,11,14,17,18,21,24,27,30,33,36,39,42,45,48,49,52,55,58,61,64,
%T A045930 67,70,73,76,79,82,85,88,91,94,95,98,101,104,107,110,113,116,119,122,
%U A045930 125,128,131,134,137,140,143,146,149,152,155,156,159,162,165,168,171,174,177,180
%N A045930 The generalized Connell sequence C_{3,5}.
%H A045930 Douglas E. Iannucci and Donna Mills-Taylor, <a href="http://www.cs.uwaterloo.ca/journals/JIS/IANN/iann1.html">On Generalizing the Connell Sequence</a>, J. Integer Sequences, Vol. 2, 1999, #99.1.7.
%F A045930 a(n) = 3*n - 2*floor((13 + sqrt(40*n-31))/10). See general formula in A045928. - _Michel Marcus_, Apr 02 2013
%e A045930 From _Michel Marcus_, Apr 02 2013: (Start)
%e A045930 As a triangle, sequence begins:
%e A045930 1;
%e A045930 2, 5, 8, 11, 14, 17;
%e A045930 18, 21, 24, 27, 30, 33, 36, 39, 42, 45, 48;
%e A045930 ...
%e A045930 (End)
%p A045930 A045930:=n->3*n - 2*floor((13 + sqrt(40*n-31))/10); seq(A045930(n), n=1..100); # _Wesley Ivan Hurt_, Feb 03 2014
%t A045930 Table[3 n - 2*Floor[(13 + Sqrt[40 n - 31])/10], {n, 100}] (* _Wesley Ivan Hurt_, Feb 03 2014 *)
%Y A045930 Cf. A045928.
%K A045930 nonn,easy
%O A045930 1,2
%A A045930 _N. J. A. Sloane_
%E A045930 More terms from jeroen.lahousse(AT)icl.com