A154558 - OEIS

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A154558 as a triangular array

1

1 2

1 4 4

1 6 12 9

1 8 24 36 21

1 10 40 90 105 51

1 12 60 180 315 306 127

1 14 84 315 735 1071 889 323

1 16 112 504 1470 2856 3556 2584 835

1 18 144 756 2646 6426 10668 11628 7515 2188

A154558 as a square array

`1`	`1`	`1`	`1`	`1`	`1`	`1`	`1`	`1`	`1`
`2`	`4`	`6`	`8`	`10`	`12`	`14`	`16`	`18`
`4`	`12`	`24`	`40`	`60`	`84`	`112`	`144`
`9`	`36`	`90`	`180`	`315`	`504`	`756`
`21`	`105`	`315`	`735`	`1470`	`2646`
`51`	`306`	`1071`	`2856`	`6426`
`127`	`889`	`3556`	`10668`
`323`	`2584`	`11628`
`835`	`7515`
`2188`

A154558 as an upper right triangle

`1`	`1`	`1`	`1`	`1`	`1`	`1`	`1`	`1`	`1`
	`2`	`4`	`6`	`8`	`10`	`12`	`14`	`16`	`18`
		`4`	`12`	`24`	`40`	`60`	`84`	`112`	`144`
			`9`	`36`	`90`	`180`	`315`	`504`	`756`
				`21`	`105`	`315`	`735`	`1470`	`2646`
					`51`	`306`	`1071`	`2856`	`6426`
						`127`	`889`	`3556`	`10668`
							`323`	`2584`	`11628`
								`835`	`7515`
									`2188`

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Last modified July 17 21:15 EDT 2024. Contains 374377 sequences. (Running on oeis4.)