A305509 - OEIS

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A305509 as a triangular array

0

0 0

0 3 0

0 5 5 0

0 18 4 18 0

0 61 42 42 61 0

0 209 130 346 130 209 0

0 702 464 1767 1767 464 702 0

0 2381 1722 10182 13314 10182 1722 2381 0

0 8069 6378 60352 101912 101912 60352 6378 8069 0

0 27330 22939 350540

A305509 as a square array

`0`	`0`	`0`	`0`	`0`	`0`	`0`	`0`	`0`	`0`	`0`
`0`	`3`	`5`	`18`	`61`	`209`	`702`	`2381`	`8069`	`27330`
`0`	`5`	`4`	`42`	`130`	`464`	`1722`	`6378`	`22939`
`0`	`18`	`42`	`346`	`1767`	`10182`	`60352`	`350540`
`0`	`61`	`130`	`1767`	`13314`	`101912`
`0`	`209`	`464`	`10182`	`101912`
`0`	`702`	`1722`	`60352`
`0`	`2381`	`6378`
`0`	`8069`
`0`

A305509 as an upper right triangle

`0`	`0`	`0`	`0`	`0`	`0`	`0`	`0`	`0`	`0`	`0`
	`0`	`3`	`5`	`18`	`61`	`209`	`702`	`2381`	`8069`	`27330`
		`0`	`5`	`4`	`42`	`130`	`464`	`1722`	`6378`	`22939`
			`0`	`18`	`42`	`346`	`1767`	`10182`	`60352`	`350540`
				`0`	`61`	`130`	`1767`	`13314`	`101912`
					`0`	`209`	`464`	`10182`	`101912`
						`0`	`702`	`1722`	`60352`
							`0`	`2381`	`6378`
								`0`	`8069`
									`0`

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Last modified August 31 11:37 EDT 2024. Contains 375560 sequences. (Running on oeis4.)