A217257 - OEIS

The OEIS is supported by the many generous donors to the OEIS Foundation.

A217257 as a triangular array

															1
														1		0
													1		1		0
												1		2		0		0
											1		3		2		0		0
										1		4		5		0		0		0
									1		5		9		5		0		0		0
								0		6		14		14		0		0		0		0
							0		6		20		28		14		0		0		0		0
						0		0		26		48		42		0		0		0		0		0
					0		0		26		74		90		42		0		0		0		0		0
				0		0		0		100		164		132		0		0		0		0		0		0
			0		0		0		100		264		296		132		0		0		0		0		0		0
		0		0		0		0		364		560		428		0		0		0		0		0		0		0
	0		0

A217257 as a square array

1	1	1	1	1	1	1	0	0	0	0	0	0	0	0
0	1	2	3	4	5	6	6	0	0	0	0	0	0
0	0	2	5	9	14	20	26	26	0	0	0
0	0	0	5	14	28	48	74	100	100	0
0	0	0	0	14	42	90	164	264	364
0	0	0	0	0	42	132	296	560
0	0	0	0	0	0	132	428
0	0	0	0	0	0	0
0	0	0	0	0	0
0	0	0	0	0
0	0	0	0
0	0	0
0	0
0

A217257 as an upper right triangle

1	1	1	1	1	1	1	0	0	0	0	0	0	0	0
	0	1	2	3	4	5	6	6	0	0	0	0	0	0
		0	0	2	5	9	14	20	26	26	0	0	0
			0	0	0	5	14	28	48	74	100	100	0
				0	0	0	0	14	42	90	164	264	364
					0	0	0	0	0	42	132	296	560
						0	0	0	0	0	0	132	428
							0	0	0	0	0	0	0
								0	0	0	0	0	0
									0	0	0	0	0
										0	0	0	0
											0	0	0
												0	0
													0