A131334 - OEIS

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A131334 as a triangular array

									1
								0		1
							1		0		1
						0		1		1		1
					1		0		2		1		1
				0		1		2		2		2		1
			1		0		3		2		4		2		1
		0		1		3		3		6		4		3		1
	1		0		4		3		9		6		7		3		1
0		1		4		4		12		9		13		7		4		1

A131334 as a square array

1	0	1	0	1	0	1	0	1	0
1	0	1	0	1	0	1	0	1
1	1	2	2	3	3	4	4
1	1	2	2	3	3	4
1	2	4	6	9	12
1	2	4	6	9
1	3	7	13
1	3	7
1	4
1

A131334 as an upper right triangle

1	0	1	0	1	0	1	0	1	0
	1	0	1	0	1	0	1	0	1
		1	1	2	2	3	3	4	4
			1	1	2	2	3	3	4
				1	2	4	6	9	12
					1	2	4	6	9
						1	3	7	13
							1	3	7
								1	4
									1