A216663 - OEIS

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A216663 as a triangular array

1

1 1

2 4 2

5 25 25 5

15 279 780 279 15

52 4800 59799 59799 4800 52

203 116635 8990804 45120796 8990804 116635 203

877 3760019 2315439963 84915719366 84915719366 2315439963 3760019 877

4140 153831836

A216663 as a square array

`1`	`1`	`2`	`5`	`15`	`52`	`203`	`877`	`4140`
`1`	`4`	`25`	`279`	`4800`	`116635`	`3760019`	`153831836`
`2`	`25`	`780`	`59799`	`8990804`	`2315439963`
`5`	`279`	`59799`	`45120796`	`84915719366`
`15`	`4800`	`8990804`	`84915719366`
`52`	`116635`	`2315439963`
`203`	`3760019`
`877`

A216663 as an upper right triangle

`1`	`1`	`2`	`5`	`15`	`52`	`203`	`877`	`4140`
	`1`	`4`	`25`	`279`	`4800`	`116635`	`3760019`	`153831836`
		`2`	`25`	`780`	`59799`	`8990804`	`2315439963`
			`5`	`279`	`59799`	`45120796`	`84915719366`
				`15`	`4800`	`8990804`	`84915719366`
					`52`	`116635`	`2315439963`
						`203`	`3760019`
							`877`

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Last modified June 1 06:46 EDT 2024. Contains 373013 sequences. (Running on oeis4.)