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A139801 A139687(n) (1, 1, 1, 2, 2, 1) differences by rows, 0's deleted (*).Triangle on line. 1

%I

%S 1,2,2,2,3,3,3,6,9,9,3,6,10,14,14,4,10,20,34,48,48,4,10,20,35,55,75,

%T 75,5,15,35,70,125,200,275,275,5,15,35,70,126,209,319,429,429,6,21,56,

%U 126,252,461,780,1209,1638,1638

%N A139687(n) (1, 1, 1, 2, 2, 1) differences by rows, 0's deleted (*).Triangle on line.

%C (*) Full Triangle:

%C 0;

%C 1, 0;

%C 2, 2, 0;

%C 2, 3, 3, 0;

%C 3, 6, 9, 9, 0;

%C 3, 6, 10, 14, 14, 0;

%F Even rows (with a leading 1) are in A139687.Must be separated from odd rows.

%K nonn,tabl,uned

%O 0,2

%A _Paul Curtz_, Jun 14 2008

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Last modified May 29 03:06 EDT 2020. Contains 334696 sequences. (Running on oeis4.)