A155998 - OEIS

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A155998 as a triangular array

0

1 1

0 4 0

1 3 3 1

0 8 0 8 0

1 5 10 10 5 1

0 12 0 40 0 12 0

1 7 21 35 35 21 7 1

0 16 0 112 0 112 0 16 0

1 9 36 84 126 126 84 36 9 1

0 20 0 240 0 504 0 240 0 20 0

A155998 as a square array

`0`	`1`	`0`	`1`	`0`	`1`	`0`	`1`	`0`	`1`	`0`
`1`	`4`	`3`	`8`	`5`	`12`	`7`	`16`	`9`	`20`
`0`	`3`	`0`	`10`	`0`	`21`	`0`	`36`	`0`
`1`	`8`	`10`	`40`	`35`	`112`	`84`	`240`
`0`	`5`	`0`	`35`	`0`	`126`	`0`
`1`	`12`	`21`	`112`	`126`	`504`
`0`	`7`	`0`	`84`	`0`
`1`	`16`	`36`	`240`
`0`	`9`	`0`
`1`	`20`
`0`

A155998 as an upper right triangle

`0`	`1`	`0`	`1`	`0`	`1`	`0`	`1`	`0`	`1`	`0`
	`1`	`4`	`3`	`8`	`5`	`12`	`7`	`16`	`9`	`20`
		`0`	`3`	`0`	`10`	`0`	`21`	`0`	`36`	`0`
			`1`	`8`	`10`	`40`	`35`	`112`	`84`	`240`
				`0`	`5`	`0`	`35`	`0`	`126`	`0`
					`1`	`12`	`21`	`112`	`126`	`504`
						`0`	`7`	`0`	`84`	`0`
							`1`	`16`	`36`	`240`
								`0`	`9`	`0`
									`1`	`20`
										`0`

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Last modified April 23 10:29 EDT 2024. Contains 371905 sequences. (Running on oeis4.)