A221817 - OEIS

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A221817 as a triangular array

0

1 0

0 4 0

1 16 12 0

0 91 14 40 0

1 459 1041 379 136 0

0 2429 7320 29412 1052 460 0

1 12678 123644 854959 574706 11079 1556 0

0 66380 1271018 35948127 35993876 13076919 47390 5264 0

1 347305 17049353

A221817 as a square array

`0`	`1`	`0`	`1`	`0`	`1`	`0`	`1`	`0`	`1`
`0`	`4`	`16`	`91`	`459`	`2429`	`12678`	`66380`	`347305`
`0`	`12`	`14`	`1041`	`7320`	`123644`	`1271018`	`17049353`
`0`	`40`	`379`	`29412`	`854959`	`35948127`
`0`	`136`	`1052`	`574706`	`35993876`
`0`	`460`	`11079`	`13076919`
`0`	`1556`	`47390`
`0`	`5264`
`0`

A221817 as an upper right triangle

`0`	`1`	`0`	`1`	`0`	`1`	`0`	`1`	`0`	`1`
	`0`	`4`	`16`	`91`	`459`	`2429`	`12678`	`66380`	`347305`
		`0`	`12`	`14`	`1041`	`7320`	`123644`	`1271018`	`17049353`
			`0`	`40`	`379`	`29412`	`854959`	`35948127`
				`0`	`136`	`1052`	`574706`	`35993876`
					`0`	`460`	`11079`	`13076919`
						`0`	`1556`	`47390`
							`0`	`5264`
								`0`

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