A258709 - OEIS

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A258709 as a triangular array

												1
											1		1
										2		1		1
									4		2		1		1
								9		4		2		1		1
							21		8		4		2		1		1
						51		17		8		4		2		1		1
					127		37		16		8		4		2		1		1
				323		82		33		16		8		4		2		1		1
			835		185		69		32		16		8		4		2		1		1
		2188		423		146		65		32		16		8		4		2		1		1
	5798		978		312		133		64		32		16		8		4		2		1		1

A258709 as a square array

1	1	2	4	9	21	51	127	323	835	2188	5798
1	1	2	4	8	17	37	82	185	423	978
1	1	2	4	8	16	33	69	146	312
1	1	2	4	8	16	32	65	133
1	1	2	4	8	16	32	64
1	1	2	4	8	16	32
1	1	2	4	8	16
1	1	2	4	8
1	1	2	4
1	1	2
1	1
1

A258709 as an upper right triangle

1	1	2	4	9	21	51	127	323	835	2188	5798
	1	1	2	4	8	17	37	82	185	423	978
		1	1	2	4	8	16	33	69	146	312
			1	1	2	4	8	16	32	65	133
				1	1	2	4	8	16	32	64
					1	1	2	4	8	16	32
						1	1	2	4	8	16
							1	1	2	4	8
								1	1	2	4
									1	1	2
										1	1
											1