A265609 - OEIS

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A265609 as a triangular array

1

1 0

1 1 0

1 2 2 0

1 3 6 6 0

1 4 12 24 24 0

1 5 20 60 120 120 0

1 6 30 120 360 720 720 0

1 7 42 210 840 2520 5040 5040 0

1 8 56 336 1680 6720 20160 40320 40320 0

A265609 as a square array

`1`	`1`	`1`	`1`	`1`	`1`	`1`	`1`	`1`	`1`
`0`	`1`	`2`	`3`	`4`	`5`	`6`	`7`	`8`
`0`	`2`	`6`	`12`	`20`	`30`	`42`	`56`
`0`	`6`	`24`	`60`	`120`	`210`	`336`
`0`	`24`	`120`	`360`	`840`	`1680`
`0`	`120`	`720`	`2520`	`6720`
`0`	`720`	`5040`	`20160`
`0`	`5040`	`40320`
`0`	`40320`
`0`

A265609 as an upper right triangle

`1`	`1`	`1`	`1`	`1`	`1`	`1`	`1`	`1`	`1`
	`0`	`1`	`2`	`3`	`4`	`5`	`6`	`7`	`8`
		`0`	`2`	`6`	`12`	`20`	`30`	`42`	`56`
			`0`	`6`	`24`	`60`	`120`	`210`	`336`
				`0`	`24`	`120`	`360`	`840`	`1680`
					`0`	`120`	`720`	`2520`	`6720`
						`0`	`720`	`5040`	`20160`
							`0`	`5040`	`40320`
								`0`	`40320`
									`0`

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Last modified May 14 20:39 EDT 2024. Contains 372533 sequences. (Running on oeis4.)