A270880 - OEIS

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A270880 as a triangular array

1

0 1

0 1 3

0 1 28 28

0 1 400 1680 840

0 1 10416 168640 277760 83328

0 1 525792 36053248 159989760 139991040 27998208

0 1 51116992 17811244032 209056841728 419919790080 227569434624 32509919232

A270880 as a square array

`1`	`0`	`0`	`0`	`0`	`0`	`0`	`0`
`1`	`1`	`1`	`1`	`1`	`1`	`1`
`3`	`28`	`400`	`10416`	`525792`	`51116992`
`28`	`1680`	`168640`	`36053248`	`17811244032`
`840`	`277760`	`159989760`	`209056841728`
`83328`	`139991040`	`419919790080`
`27998208`	`227569434624`
`32509919232`

A270880 as an upper right triangle

`1`	`0`	`0`	`0`	`0`	`0`	`0`	`0`
	`1`	`1`	`1`	`1`	`1`	`1`	`1`
		`3`	`28`	`400`	`10416`	`525792`	`51116992`
			`28`	`1680`	`168640`	`36053248`	`17811244032`
				`840`	`277760`	`159989760`	`209056841728`
					`83328`	`139991040`	`419919790080`
						`27998208`	`227569434624`
							`32509919232`

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Last modified April 24 22:17 EDT 2024. Contains 371964 sequences. (Running on oeis4.)