A107661 - OEIS

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A107661 as a triangular array

1

1 2

1 4 3

1 6 10 4

1 8 21 24 5

1 10 36 72 52 6

1 12 55 160 225 112 7

1 14 78 300 656 702 232 8

1 16 105 504 1525 2688 2133 480 9

1 18 136 784 3060 7750 10816 6480 976 10

1 20 171 1152 5537 18576 38875

A107661 as a square array

`1`	`1`	`1`	`1`	`1`	`1`	`1`	`1`	`1`	`1`	`1`
`2`	`4`	`6`	`8`	`10`	`12`	`14`	`16`	`18`	`20`
`3`	`10`	`21`	`36`	`55`	`78`	`105`	`136`	`171`
`4`	`24`	`72`	`160`	`300`	`504`	`784`	`1152`
`5`	`52`	`225`	`656`	`1525`	`3060`	`5537`
`6`	`112`	`702`	`2688`	`7750`	`18576`
`7`	`232`	`2133`	`10816`	`38875`
`8`	`480`	`6480`
`9`	`976`
`10`

A107661 as an upper right triangle

`1`	`1`	`1`	`1`	`1`	`1`	`1`	`1`	`1`	`1`	`1`
	`2`	`4`	`6`	`8`	`10`	`12`	`14`	`16`	`18`	`20`
		`3`	`10`	`21`	`36`	`55`	`78`	`105`	`136`	`171`
			`4`	`24`	`72`	`160`	`300`	`504`	`784`	`1152`
				`5`	`52`	`225`	`656`	`1525`	`3060`	`5537`
					`6`	`112`	`702`	`2688`	`7750`	`18576`
						`7`	`232`	`2133`	`10816`	`38875`
							`8`	`480`	`6480`
								`9`	`976`
									`10`

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Last modified April 23 23:26 EDT 2024. Contains 371917 sequences. (Running on oeis4.)