A028421 - OEIS

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A028421 as a triangular array

1

1 2

2 6 3

6 22 18 4

24 100 105 40 5

120 548 675 340 75 6

720 3528 4872 2940 875 126 7

5040 26136 39396 27076 9800 1932 196 8

40320 219168 354372 269136 112245 27216 3822 288 9

A028421 as a square array

`1`	`1`	`2`	`6`	`24`	`120`	`720`	`5040`	`40320`
`2`	`6`	`22`	`100`	`548`	`3528`	`26136`	`219168`
`3`	`18`	`105`	`675`	`4872`	`39396`	`354372`
`4`	`40`	`340`	`2940`	`27076`	`269136`
`5`	`75`	`875`	`9800`	`112245`
`6`	`126`	`1932`	`27216`
`7`	`196`	`3822`
`8`	`288`
`9`

A028421 as an upper right triangle

`1`	`1`	`2`	`6`	`24`	`120`	`720`	`5040`	`40320`
	`2`	`6`	`22`	`100`	`548`	`3528`	`26136`	`219168`
		`3`	`18`	`105`	`675`	`4872`	`39396`	`354372`
			`4`	`40`	`340`	`2940`	`27076`	`269136`
				`5`	`75`	`875`	`9800`	`112245`
					`6`	`126`	`1932`	`27216`
						`7`	`196`	`3822`
							`8`	`288`
								`9`

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Last modified July 16 19:20 EDT 2024. Contains 374358 sequences. (Running on oeis4.)