A268073 - OEIS

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A268073 as a triangular array

1

2 2

4 15 4

12 159 159 12

39 2191 7445 2191 39

138 30295 381958 381958 30295 138

499 421471 18691624 70985206 18691624 421471 499

1830 5797959 911680225 12341773443 12341773443 911680225 5797959 1830

6723 79367143

A268073 as a square array

`1`	`2`	`4`	`12`	`39`	`138`	`499`	`1830`	`6723`
`2`	`15`	`159`	`2191`	`30295`	`421471`	`5797959`	`79367143`
`4`	`159`	`7445`	`381958`	`18691624`	`911680225`
`12`	`2191`	`381958`	`70985206`	`12341773443`
`39`	`30295`	`18691624`	`12341773443`
`138`	`421471`	`911680225`
`499`	`5797959`
`1830`

A268073 as an upper right triangle

`1`	`2`	`4`	`12`	`39`	`138`	`499`	`1830`	`6723`
	`2`	`15`	`159`	`2191`	`30295`	`421471`	`5797959`	`79367143`
		`4`	`159`	`7445`	`381958`	`18691624`	`911680225`
			`12`	`2191`	`381958`	`70985206`	`12341773443`
				`39`	`30295`	`18691624`	`12341773443`
					`138`	`421471`	`911680225`
						`499`	`5797959`
							`1830`

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Last modified April 25 01:35 EDT 2024. Contains 371964 sequences. (Running on oeis4.)