A121757 - OEIS

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A121757 as a triangular array

1

1 2

1 4 6

1 6 18 24

1 8 36 96 120

1 10 60 240 600 720

1 12 90 480 1800 4320 5040

1 14 126 840 4200 15120 35280 40320

1 16 168 1344 8400 40320 141120 322560 362880

1 18 216 2016 15120 90720 423360 1451520

A121757 as a square array

`1`	`1`	`1`	`1`	`1`	`1`	`1`	`1`	`1`	`1`
`2`	`4`	`6`	`8`	`10`	`12`	`14`	`16`	`18`
`6`	`18`	`36`	`60`	`90`	`126`	`168`	`216`
`24`	`96`	`240`	`480`	`840`	`1344`	`2016`
`120`	`600`	`1800`	`4200`	`8400`	`15120`
`720`	`4320`	`15120`	`40320`	`90720`
`5040`	`35280`	`141120`	`423360`
`40320`	`322560`	`1451520`
`362880`

A121757 as an upper right triangle

`1`	`1`	`1`	`1`	`1`	`1`	`1`	`1`	`1`	`1`
	`2`	`4`	`6`	`8`	`10`	`12`	`14`	`16`	`18`
		`6`	`18`	`36`	`60`	`90`	`126`	`168`	`216`
			`24`	`96`	`240`	`480`	`840`	`1344`	`2016`
				`120`	`600`	`1800`	`4200`	`8400`	`15120`
					`720`	`4320`	`15120`	`40320`	`90720`
						`5040`	`35280`	`141120`	`423360`
							`40320`	`322560`	`1451520`
								`362880`

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Last modified May 12 23:40 EDT 2024. Contains 372497 sequences. (Running on oeis4.)