A221225 - OEIS

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A221225 as a triangular array

1

3 3

8 35 8

21 400 400 21

55 4525 18768 4525 55

144 51025 867776 867776 51025 144

377 574800 39983152 161854465 39983152 574800 377

987 6473175 1840507104 29983033601 29983033601 1840507104 6473175 987

2584

A221225 as a square array

`1`	`3`	`8`	`21`	`55`	`144`	`377`	`987`	`2584`
`3`	`35`	`400`	`4525`	`51025`	`574800`	`6473175`
`8`	`400`	`18768`	`867776`	`39983152`	`1840507104`
`21`	`4525`	`867776`	`161854465`	`29983033601`
`55`	`51025`	`39983152`	`29983033601`
`144`	`574800`	`1840507104`
`377`	`6473175`
`987`

A221225 as an upper right triangle

`1`	`3`	`8`	`21`	`55`	`144`	`377`	`987`	`2584`
	`3`	`35`	`400`	`4525`	`51025`	`574800`	`6473175`
		`8`	`400`	`18768`	`867776`	`39983152`	`1840507104`
			`21`	`4525`	`867776`	`161854465`	`29983033601`
				`55`	`51025`	`39983152`	`29983033601`
					`144`	`574800`	`1840507104`
						`377`	`6473175`
							`987`

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Last modified September 15 06:13 EDT 2024. Contains 375931 sequences. (Running on oeis4.)