A221833 - OEIS

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A221833 as a triangular array

1

0 1

0 1 1

0 0 2 1

0 0 3 3 1

0 0 2 6 4 1

0 0 1 10 10 5 1

0 0 0 12 20 15 6 1

0 0 0 12 35 35 21 7 1

0 0 0 10 52 70 56 28 8 1

0 0 0 6 68 126 126 84 36 9 1

0 0 0 3 80 205 252 210 120 45 10 1

A221833 as a square array

`1`	`0`	`0`	`0`	`0`	`0`	`0`	`0`	`0`	`0`	`0`	`0`
`1`	`1`	`0`	`0`	`0`	`0`	`0`	`0`	`0`	`0`	`0`
`1`	`2`	`3`	`2`	`1`	`0`	`0`	`0`	`0`	`0`
`1`	`3`	`6`	`10`	`12`	`12`	`10`	`6`	`3`
`1`	`4`	`10`	`20`	`35`	`52`	`68`	`80`
`1`	`5`	`15`	`35`	`70`	`126`	`205`
`1`	`6`	`21`	`56`	`126`	`252`
`1`	`7`	`28`	`84`	`210`
`1`	`8`	`36`	`120`
`1`	`9`	`45`
`1`	`10`
`1`

A221833 as an upper right triangle

`1`	`0`	`0`	`0`	`0`	`0`	`0`	`0`	`0`	`0`	`0`	`0`
	`1`	`1`	`0`	`0`	`0`	`0`	`0`	`0`	`0`	`0`	`0`
		`1`	`2`	`3`	`2`	`1`	`0`	`0`	`0`	`0`	`0`
			`1`	`3`	`6`	`10`	`12`	`12`	`10`	`6`	`3`
				`1`	`4`	`10`	`20`	`35`	`52`	`68`	`80`
					`1`	`5`	`15`	`35`	`70`	`126`	`205`
						`1`	`6`	`21`	`56`	`126`	`252`
							`1`	`7`	`28`	`84`	`210`
								`1`	`8`	`36`	`120`
									`1`	`9`	`45`
										`1`	`10`
											`1`

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Last modified April 23 23:26 EDT 2024. Contains 371917 sequences. (Running on oeis4.)