A121468 - OEIS

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A121468 as a triangular array

1

2 1

6 3 1

18 9 4 1

53 28 12 5 1

154 85 38 15 6 1

443 253 117 48 18 7 1

1264 742 352 149 58 21 8 1

3582 2151 1041 451 181 68 24 9 1

10092 6177 3038 1340 550 213 78 27 10 1

28291 17600 8772 3925 1639 649 245 88 30 11 1

A121468 as a square array

`1`	`2`	`6`	`18`	`53`	`154`	`443`	`1264`	`3582`	`10092`	`28291`
`1`	`3`	`9`	`28`	`85`	`253`	`742`	`2151`	`6177`	`17600`
`1`	`4`	`12`	`38`	`117`	`352`	`1041`	`3038`	`8772`
`1`	`5`	`15`	`48`	`149`	`451`	`1340`	`3925`
`1`	`6`	`18`	`58`	`181`	`550`	`1639`
`1`	`7`	`21`	`68`	`213`	`649`
`1`	`8`	`24`	`78`	`245`
`1`	`9`	`27`	`88`
`1`	`10`	`30`
`1`	`11`
`1`

A121468 as an upper right triangle

`1`	`2`	`6`	`18`	`53`	`154`	`443`	`1264`	`3582`	`10092`	`28291`
	`1`	`3`	`9`	`28`	`85`	`253`	`742`	`2151`	`6177`	`17600`
		`1`	`4`	`12`	`38`	`117`	`352`	`1041`	`3038`	`8772`
			`1`	`5`	`15`	`48`	`149`	`451`	`1340`	`3925`
				`1`	`6`	`18`	`58`	`181`	`550`	`1639`
					`1`	`7`	`21`	`68`	`213`	`649`
						`1`	`8`	`24`	`78`	`245`
							`1`	`9`	`27`	`88`
								`1`	`10`	`30`
									`1`	`11`
										`1`

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Last modified May 23 00:54 EDT 2024. Contains 372758 sequences. (Running on oeis4.)