A157171 - OEIS

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A157171 as a triangular array

1

1 1

1 11 1

1 21 21 1

1 31 66 31 1

1 41 136 136 41 1

1 51 231 362 231 51 1

1 61 351 755 755 351 61 1

1 71 496 1361 1870 1361 496 71 1

1 81 666 2226 3906 3906 2226 666 81 1

1 91 861 3396 7266 9282 7266 3396 861 91 1

A157171 as a square array

`1`	`1`	`1`	`1`	`1`	`1`	`1`	`1`	`1`	`1`	`1`
`1`	`11`	`21`	`31`	`41`	`51`	`61`	`71`	`81`	`91`
`1`	`21`	`66`	`136`	`231`	`351`	`496`	`666`	`861`
`1`	`31`	`136`	`362`	`755`	`1361`	`2226`	`3396`
`1`	`41`	`231`	`755`	`1870`	`3906`	`7266`
`1`	`51`	`351`	`1361`	`3906`	`9282`
`1`	`61`	`496`	`2226`	`7266`
`1`	`71`	`666`	`3396`
`1`	`81`	`861`
`1`	`91`
`1`

A157171 as an upper right triangle

`1`	`1`	`1`	`1`	`1`	`1`	`1`	`1`	`1`	`1`	`1`
	`1`	`11`	`21`	`31`	`41`	`51`	`61`	`71`	`81`	`91`
		`1`	`21`	`66`	`136`	`231`	`351`	`496`	`666`	`861`
			`1`	`31`	`136`	`362`	`755`	`1361`	`2226`	`3396`
				`1`	`41`	`231`	`755`	`1870`	`3906`	`7266`
					`1`	`51`	`351`	`1361`	`3906`	`9282`
						`1`	`61`	`496`	`2226`	`7266`
							`1`	`71`	`666`	`3396`
								`1`	`81`	`861`
									`1`	`91`
										`1`

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Last modified April 19 11:31 EDT 2024. Contains 371792 sequences. (Running on oeis4.)