A278280 - OEIS

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A278280 as a triangular array

0

0 0

0 2 0

0 4 5 0

0 13 25 16 0

0 36 122 136 49 0

0 109 661 1461 839 153 0

0 317 3723 15728 16842 5013 476 0

0 938 20736 172091 350649 196726 30370 1483 0

0 2754 115446 1870365 7466627 7974561 2293193

A278280 as a square array

`0`	`0`	`0`	`0`	`0`	`0`	`0`	`0`	`0`	`0`
`0`	`2`	`4`	`13`	`36`	`109`	`317`	`938`	`2754`
`0`	`5`	`25`	`122`	`661`	`3723`	`20736`	`115446`
`0`	`16`	`136`	`1461`	`15728`	`172091`	`1870365`
`0`	`49`	`839`	`16842`	`350649`	`7466627`
`0`	`153`	`5013`	`196726`	`7974561`
`0`	`476`	`30370`	`2293193`
`0`	`1483`
`0`

A278280 as an upper right triangle

`0`	`0`	`0`	`0`	`0`	`0`	`0`	`0`	`0`	`0`
	`0`	`2`	`4`	`13`	`36`	`109`	`317`	`938`	`2754`
		`0`	`5`	`25`	`122`	`661`	`3723`	`20736`	`115446`
			`0`	`16`	`136`	`1461`	`15728`	`172091`	`1870365`
				`0`	`49`	`839`	`16842`	`350649`	`7466627`
					`0`	`153`	`5013`	`196726`	`7974561`
						`0`	`476`	`30370`	`2293193`
							`0`	`1483`
								`0`

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Last modified April 24 14:13 EDT 2024. Contains 371960 sequences. (Running on oeis4.)