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 A238383 #6 Jun 12 2017 06:58:32
%S A238383 1,2,3,4,6,8,11,14,18,22,28,34,43,52,65,78,97,116,144,172,213,254,314,
%T A238383 374,462,550,679,808,997,1186,1463,1740,2146,2552,3147,3742,4614,5486,
%U A238383 6764,8042,9915,11788,14533,17278,21301,25324,31220,37116,45757
%N A238383 Row sums of triangle in A139040.
%H A238383 <a href="/index/Rec#order_07">Index entries for linear recurrences with constant coefficients</a>, signature (1,1,-1,0,0,1,-1).
%F A238383 G.f.: (1+x^4)*(1+x)/((1-x)*(1-x^2-x^6)).
%F A238383 a(n) = a(n-1) + a(n-2) - a(n-3) + a(n-6) - a(n-7), a(0) = 1, a(1) = 2, a(2) = 3, a(3) = 4, a(4) = 6, a(5) = 8, a(6) = 11.
%t A238383 LinearRecurrence[{1,1,-1,0,0,1,-1},{1,2,3,4,6,8,11},60] (* _Harvey P. Dale_, Jun 12 2017 *)
%Y A238383 Cf. A139040
%K A238383 easy,nonn
%O A238383 0,2
%A A238383 _Philippe Deléham_, Feb 25 2014