A172380 - OEIS

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A172380 as a triangular array

1

0 1

0 1 1

0 2 3 1

0 5 10 6 1

0 14 36 31 10 1

0 42 137 156 75 15 1

0 132 544 787 510 155 21 1

0 429 2235 4017 3331 1380 287 28 1

0 1430 9445 20809 21405 11411 3255 490 36 1

0 4862 40876 109486 136921 90665

A172380 as a square array

`1`	`0`	`0`	`0`	`0`	`0`	`0`	`0`	`0`	`0`	`0`
`1`	`1`	`2`	`5`	`14`	`42`	`132`	`429`	`1430`	`4862`
`1`	`3`	`10`	`36`	`137`	`544`	`2235`	`9445`	`40876`
`1`	`6`	`31`	`156`	`787`	`4017`	`20809`	`109486`
`1`	`10`	`75`	`510`	`3331`	`21405`	`136921`
`1`	`15`	`155`	`1380`	`11411`	`90665`
`1`	`21`	`287`	`3255`
`1`	`28`	`490`
`1`	`36`
`1`

A172380 as an upper right triangle

`1`	`0`	`0`	`0`	`0`	`0`	`0`	`0`	`0`	`0`	`0`
	`1`	`1`	`2`	`5`	`14`	`42`	`132`	`429`	`1430`	`4862`
		`1`	`3`	`10`	`36`	`137`	`544`	`2235`	`9445`	`40876`
			`1`	`6`	`31`	`156`	`787`	`4017`	`20809`	`109486`
				`1`	`10`	`75`	`510`	`3331`	`21405`	`136921`
					`1`	`15`	`155`	`1380`	`11411`	`90665`
						`1`	`21`	`287`	`3255`
							`1`	`28`	`490`
								`1`	`36`
									`1`

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Last modified September 12 18:50 EDT 2024. Contains 375853 sequences. (Running on oeis4.)