A223449 - OEIS

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A223449 as a triangular array

15

28 28

66 104 66

144 408 408 144

336 1616 2988 1616 336

752 6432 20640 20640 6432 752

1752 25664 149120 262368 149120 25664 1752

3936 102528 1050624 3364544 3364544 1050624 102528 3936

9168 409856 7557696

A223449 as a square array

`15`	`28`	`66`	`144`	`336`	`752`	`1752`	`3936`	`9168`
`28`	`104`	`408`	`1616`	`6432`	`25664`	`102528`	`409856`
`66`	`408`	`2988`	`20640`	`149120`	`1050624`	`7557696`
`144`	`1616`	`20640`	`262368`	`3364544`
`336`	`6432`	`149120`	`3364544`
`752`	`25664`	`1050624`
`1752`	`102528`
`3936`

A223449 as an upper right triangle

`15`	`28`	`66`	`144`	`336`	`752`	`1752`	`3936`	`9168`
	`28`	`104`	`408`	`1616`	`6432`	`25664`	`102528`	`409856`
		`66`	`408`	`2988`	`20640`	`149120`	`1050624`	`7557696`
			`144`	`1616`	`20640`	`262368`	`3364544`
				`336`	`6432`	`149120`	`3364544`
					`752`	`25664`	`1050624`
						`1752`	`102528`
							`3936`

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Last modified April 25 10:34 EDT 2024. Contains 371967 sequences. (Running on oeis4.)