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 A236633 #8 Feb 04 2014 14:22:19 %S A236633 0,1,2,8,18,44,112,260,600,1346,3064,6784,15020,32812,71328,154320, %T A236633 332026,711500,1518384,3229044,6843256,14464760,30487496,64112960, %U A236633 134515472,281671698,588680628,1228211140,2558366188,5321151540,11052034932,22925310868 %N A236633 Number of overcompositions of n minus the number of compositions of n. %C A236633 Number of overcompositions of n that contain at least one overlined part. %F A236633 a(n) = A236002(n) - A011782(n). %e A236633 For n = 3 the number of overcompositions of 3 is A236002(3) = 12 and the number of compositions of 3 is A011782(3) = 4, so a(3) = 12 - 4 = 8. %e A236633 On the other hand, the 12 overcompositions of 3 are [3], [3'], [1, 2], [1', 2], [1, 2'], [1', 2'], [2, 1], [2', 1], [2, 1'], [2', 1'], [1, 1, 1], [1', 1, 1]. There are 8 overcompositions with at least one overlined part, so a(3) = 8. %Y A236633 Cf. A011782, A236002, A230441. %K A236633 nonn %O A236633 0,3 %A A236633 _Omar E. Pol_, Feb 02 2014