A257635 - OEIS

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A257635 as a triangular array

1

2 1

12 7 1

120 74 15 1

1680 1066 251 26 1

30240 19524 5000 635 40 1

665280 434568 117454 16815 1345 57 1

17297280 11393808 3197348 495544 45815 2527 77 1

518918400 343976400 99236556 16275700 1659889 107800 4354 100 1

A257635 as a square array

`1`	`2`	`12`	`120`	`1680`	`30240`	`665280`	`17297280`	`518918400`
`1`	`7`	`74`	`1066`	`19524`	`434568`	`11393808`	`343976400`
`1`	`15`	`251`	`5000`	`117454`	`3197348`	`99236556`
`1`	`26`	`635`	`16815`	`495544`	`16275700`
`1`	`40`	`1345`	`45815`	`1659889`
`1`	`57`	`2527`	`107800`
`1`	`77`	`4354`
`1`	`100`
`1`

A257635 as an upper right triangle

`1`	`2`	`12`	`120`	`1680`	`30240`	`665280`	`17297280`	`518918400`
	`1`	`7`	`74`	`1066`	`19524`	`434568`	`11393808`	`343976400`
		`1`	`15`	`251`	`5000`	`117454`	`3197348`	`99236556`
			`1`	`26`	`635`	`16815`	`495544`	`16275700`
				`1`	`40`	`1345`	`45815`	`1659889`
					`1`	`57`	`2527`	`107800`
						`1`	`77`	`4354`
							`1`	`100`
								`1`

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Last modified April 24 15:57 EDT 2024. Contains 371961 sequences. (Running on oeis4.)