A143409 - OEIS

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A143409 as a triangular array

1

2 1

5 3 1

16 11 4 1

65 49 19 5 1

326 261 106 29 6 1

1957 1631 685 193 41 7 1

13700 11743 5056 1457 316 55 8 1

109601 95901 42079 12341 2721 481 71 9 1

986410 876809 390454 116125 25946 4645 694 89 10 1

A143409 as a square array

`1`	`2`	`5`	`16`	`65`	`326`	`1957`	`13700`	`109601`	`986410`
`1`	`3`	`11`	`49`	`261`	`1631`	`11743`	`95901`	`876809`
`1`	`4`	`19`	`106`	`685`	`5056`	`42079`	`390454`
`1`	`5`	`29`	`193`	`1457`	`12341`	`116125`
`1`	`6`	`41`	`316`	`2721`	`25946`
`1`	`7`	`55`	`481`	`4645`
`1`	`8`	`71`	`694`
`1`	`9`	`89`
`1`	`10`
`1`

A143409 as an upper right triangle

`1`	`2`	`5`	`16`	`65`	`326`	`1957`	`13700`	`109601`	`986410`
	`1`	`3`	`11`	`49`	`261`	`1631`	`11743`	`95901`	`876809`
		`1`	`4`	`19`	`106`	`685`	`5056`	`42079`	`390454`
			`1`	`5`	`29`	`193`	`1457`	`12341`	`116125`
				`1`	`6`	`41`	`316`	`2721`	`25946`
					`1`	`7`	`55`	`481`	`4645`
						`1`	`8`	`71`	`694`
							`1`	`9`	`89`
								`1`	`10`
									`1`

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Last modified June 10 01:53 EDT 2024. Contains 373251 sequences. (Running on oeis4.)