A287318 - OEIS

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A287318 as a triangular array

1

1 0

1 2 0

1 4 6 0

1 6 36 20 0

1 8 90 400 70 0

1 10 168 1860 4900 252 0

1 12 270 5120 44730 63504 924 0

1 14 396 10900 190120 1172556 853776 3432 0

1 16 546 19920 551950 7939008 32496156 11778624 12870 0

A287318 as a square array

`1`	`1`	`1`	`1`	`1`	`1`	`1`	`1`	`1`	`1`
`0`	`2`	`4`	`6`	`8`	`10`	`12`	`14`	`16`
`0`	`6`	`36`	`90`	`168`	`270`	`396`	`546`
`0`	`20`	`400`	`1860`	`5120`	`10900`	`19920`
`0`	`70`	`4900`	`44730`	`190120`	`551950`
`0`	`252`	`63504`	`1172556`	`7939008`
`0`	`924`	`853776`	`32496156`
`0`	`3432`	`11778624`
`0`	`12870`
`0`

A287318 as an upper right triangle

`1`	`1`	`1`	`1`	`1`	`1`	`1`	`1`	`1`	`1`
	`0`	`2`	`4`	`6`	`8`	`10`	`12`	`14`	`16`
		`0`	`6`	`36`	`90`	`168`	`270`	`396`	`546`
			`0`	`20`	`400`	`1860`	`5120`	`10900`	`19920`
				`0`	`70`	`4900`	`44730`	`190120`	`551950`
					`0`	`252`	`63504`	`1172556`	`7939008`
						`0`	`924`	`853776`	`32496156`
							`0`	`3432`	`11778624`
								`0`	`12870`
									`0`

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Last modified April 18 22:18 EDT 2024. Contains 371782 sequences. (Running on oeis4.)