A059881 - OEIS

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A059881 as a triangular array

														1
													0		1
												1		1		1
											2		0		1		1
										2		2		1		1		1
									4		4		1		1		1		1
								6		5		3		2		1		1		1
							9		8		5		2		2		1		1		1
						14		13		9		4		3		2		1		1		1
					23		19		14		8		3		3		2		1		1		1
				35		31		20		13		7		4		3		2		1		1		1
			55		49		32		20		12		6		4		3		2		1		1		1
		87		76		50		32		18		11		7		4		3		2		1		1		1
	136

A059881 as a square array

1	0	1	2	2	4	6	9	14	23	35	55	87	136
1	1	0	2	4	5	8	13	19	31	49	76
1	1	1	1	3	5	9	14	20	32	50
1	1	1	2	2	4	8	13	20	32
1	1	1	2	3	3	7	12	18
1	1	1	2	3	4	6	11
1	1	1	2	3	4	7
1	1	1	2	3	4
1	1	1	2	3
1	1	1	2
1	1	1
1	1
1

A059881 as an upper right triangle

1	0	1	2	2	4	6	9	14	23	35	55	87	136
	1	1	0	2	4	5	8	13	19	31	49	76
		1	1	1	1	3	5	9	14	20	32	50
			1	1	1	2	2	4	8	13	20	32
				1	1	1	2	3	3	7	12	18
					1	1	1	2	3	4	6	11
						1	1	1	2	3	4	7
							1	1	1	2	3	4
								1	1	1	2	3
									1	1	1	2
										1	1	1
											1	1
												1