A271697 - OEIS

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A271697 as a triangular array

1

0 0

0 1 0

0 1 1 0

0 1 7 1 0

0 1 21 21 1 0

0 1 51 161 51 1 0

0 1 113 813 813 113 1 0

0 1 239 3361 7631 3361 239 1 0

0 1 493 12421 53833 53833 12421 493 1 0

0 1 1003 42865 320107 607009 320107 42865 1003 1 0

A271697 as a square array

`1`	`0`	`0`	`0`	`0`	`0`	`0`	`0`	`0`	`0`	`0`
`0`	`1`	`1`	`1`	`1`	`1`	`1`	`1`	`1`	`1`
`0`	`1`	`7`	`21`	`51`	`113`	`239`	`493`	`1003`
`0`	`1`	`21`	`161`	`813`	`3361`	`12421`	`42865`
`0`	`1`	`51`	`813`	`7631`	`53833`	`320107`
`0`	`1`	`113`	`3361`	`53833`	`607009`
`0`	`1`	`239`	`12421`	`320107`
`0`	`1`	`493`	`42865`
`0`	`1`	`1003`
`0`	`1`
`0`

A271697 as an upper right triangle

`1`	`0`	`0`	`0`	`0`	`0`	`0`	`0`	`0`	`0`	`0`
	`0`	`1`	`1`	`1`	`1`	`1`	`1`	`1`	`1`	`1`
		`0`	`1`	`7`	`21`	`51`	`113`	`239`	`493`	`1003`
			`0`	`1`	`21`	`161`	`813`	`3361`	`12421`	`42865`
				`0`	`1`	`51`	`813`	`7631`	`53833`	`320107`
					`0`	`1`	`113`	`3361`	`53833`	`607009`
						`0`	`1`	`239`	`12421`	`320107`
							`0`	`1`	`493`	`42865`
								`0`	`1`	`1003`
									`0`	`1`
										`0`

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Last modified April 25 07:07 EDT 2024. Contains 371964 sequences. (Running on oeis4.)