A180662 - OEIS

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A180662 as a triangular array

0

0 1

0 1 2

0 1 2 6

0 1 2 6 15

0 1 2 6 15 40

0 1 2 6 15 40 104

0 1 2 6 15 40 104 273

0 1 2 6 15 40 104 273 714

0 1 2 6 15 40 104 273 714 1870

0 1 2 6 15 40 104 273 714 1870 4895

A180662 as a square array

`0`	`0`	`0`	`0`	`0`	`0`	`0`	`0`	`0`	`0`	`0`
`1`	`1`	`1`	`1`	`1`	`1`	`1`	`1`	`1`	`1`
`2`	`2`	`2`	`2`	`2`	`2`	`2`	`2`	`2`
`6`	`6`	`6`	`6`	`6`	`6`	`6`	`6`
`15`	`15`	`15`	`15`	`15`	`15`	`15`
`40`	`40`	`40`	`40`	`40`	`40`
`104`	`104`	`104`	`104`	`104`
`273`	`273`	`273`	`273`
`714`	`714`	`714`
`1870`	`1870`
`4895`

A180662 as an upper right triangle

`0`	`0`	`0`	`0`	`0`	`0`	`0`	`0`	`0`	`0`	`0`
	`1`	`1`	`1`	`1`	`1`	`1`	`1`	`1`	`1`	`1`
		`2`	`2`	`2`	`2`	`2`	`2`	`2`	`2`	`2`
			`6`	`6`	`6`	`6`	`6`	`6`	`6`	`6`
				`15`	`15`	`15`	`15`	`15`	`15`	`15`
					`40`	`40`	`40`	`40`	`40`	`40`
						`104`	`104`	`104`	`104`	`104`
							`273`	`273`	`273`	`273`
								`714`	`714`	`714`
									`1870`	`1870`
										`4895`

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Last modified April 18 20:26 EDT 2024. Contains 371781 sequences. (Running on oeis4.)