A130725 - OEIS

%I #8 Aug 24 2015 02:37:18

%S 2,2,3,5,2,3,4,6,7,8,9,2,3,4,5,7,8,9,10,11,12,13,14,16,17,18,19,2,3,4,

%T 5,6,8,9,10,11,12,13,14,15,16,17,18,19,20,22,23,24,25,26,27,28,29,30,

%U 31,32,33,34,2,3,4,5,6,7,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25

%N Irregular array where n-th row (of {binomial(n/floor(n/2)) - floor((n+1)/2)} terms) contains the positive integers (in order) which are < the greatest term of the n-th row of Pascal's triangle and which are not among the terms of the n-th row of Pascal's triangle.

%e The 5th row of Pascal's triangle is (1,5,10,10,5,1). The positive integers which are < than the greatest term (10) of this row and which are missing from this row are (2,3,4,6,7,8,9).

%p for n from 0 to 8 do brow := [seq( binomial(n,k),k=0..n)] : for k from 1 to binomial(n,floor(n/2)) do if not k in brow then printf("%d, ",k) ; fi ; od: od: # _R. J. Mathar_, Sep 02 2007

%K nonn,tabf

%O 1,1

%A _Leroy Quet_, Jul 04 2007

%E More terms from _R. J. Mathar_, Sep 02 2007