A144484 - OEIS

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A144484 as a triangular array

1

4 1

21 6 1

120 36 8 1

715 220 55 10 1

4368 1365 364 78 12 1

27132 8568 2380 560 105 14 1

170544 54264 15504 3876 816 136 16 1

1081575 346104 100947 26334 5985 1140 171 18 1

6906900 2220075 657800 177100

A144484 as a square array

`1`	`4`	`21`	`120`	`715`	`4368`	`27132`	`170544`	`1081575`	`6906900`
`1`	`6`	`36`	`220`	`1365`	`8568`	`54264`	`346104`	`2220075`
`1`	`8`	`55`	`364`	`2380`	`15504`	`100947`	`657800`
`1`	`10`	`78`	`560`	`3876`	`26334`	`177100`
`1`	`12`	`105`	`816`	`5985`
`1`	`14`	`136`	`1140`
`1`	`16`	`171`
`1`	`18`
`1`

A144484 as an upper right triangle

`1`	`4`	`21`	`120`	`715`	`4368`	`27132`	`170544`	`1081575`	`6906900`
	`1`	`6`	`36`	`220`	`1365`	`8568`	`54264`	`346104`	`2220075`
		`1`	`8`	`55`	`364`	`2380`	`15504`	`100947`	`657800`
			`1`	`10`	`78`	`560`	`3876`	`26334`	`177100`
				`1`	`12`	`105`	`816`	`5985`
					`1`	`14`	`136`	`1140`
						`1`	`16`	`171`
							`1`	`18`
								`1`

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Last modified April 24 00:30 EDT 2024. Contains 371917 sequences. (Running on oeis4.)