A230275 - OEIS

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A230275 as a triangular array

0

0 0

0 0 0

0 2 2 0

0 8 28 8 0

0 30 258 258 30 0

0 108 2318 5734 2318 108 0

0 386 19996 115630 115630 19996 386 0

0 1376 173042 2348840 5524854 2348840 173042 1376 0

0 4902 1495602 47524048 261026756

A230275 as a square array

`0`	`0`	`0`	`0`	`0`	`0`	`0`	`0`	`0`	`0`
`0`	`0`	`2`	`8`	`30`	`108`	`386`	`1376`	`4902`
`0`	`2`	`28`	`258`	`2318`	`19996`	`173042`	`1495602`
`0`	`8`	`258`	`5734`	`115630`	`2348840`	`47524048`
`0`	`30`	`2318`	`115630`	`5524854`	`261026756`
`0`	`108`	`19996`	`2348840`
`0`	`386`	`173042`
`0`	`1376`
`0`

A230275 as an upper right triangle

`0`	`0`	`0`	`0`	`0`	`0`	`0`	`0`	`0`	`0`
	`0`	`0`	`2`	`8`	`30`	`108`	`386`	`1376`	`4902`
		`0`	`2`	`28`	`258`	`2318`	`19996`	`173042`	`1495602`
			`0`	`8`	`258`	`5734`	`115630`	`2348840`	`47524048`
				`0`	`30`	`2318`	`115630`	`5524854`	`261026756`
					`0`	`108`	`19996`	`2348840`
						`0`	`386`	`173042`
							`0`	`1376`
								`0`

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Last modified February 1 12:28 EST 2023. Contains 359993 sequences. (Running on oeis4.)