A218663 - OEIS

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A218663 as a triangular array

1

3 3

5 15 5

9 57 57 9

17 225 417 225 17

31 891 3249 3249 891 31

57 3519 25533 50625 25533 3519 57

105 13905 199489 793881 793881 199489 13905 105

193 54945 1560161 12383361 24879489 12383361 1560161 54945

A218663 as a square array

`1`	`3`	`5`	`9`	`17`	`31`	`57`	`105`	`193`
`3`	`15`	`57`	`225`	`891`	`3519`	`13905`	`54945`
`5`	`57`	`417`	`3249`	`25533`	`199489`	`1560161`
`9`	`225`	`3249`	`50625`	`793881`	`12383361`
`17`	`891`	`25533`	`793881`	`24879489`
`31`	`3519`	`199489`	`12383361`
`57`	`13905`	`1560161`
`105`	`54945`

A218663 as an upper right triangle

`1`	`3`	`5`	`9`	`17`	`31`	`57`	`105`	`193`
	`3`	`15`	`57`	`225`	`891`	`3519`	`13905`	`54945`
		`5`	`57`	`417`	`3249`	`25533`	`199489`	`1560161`
			`9`	`225`	`3249`	`50625`	`793881`	`12383361`
				`17`	`891`	`25533`	`793881`	`24879489`
					`31`	`3519`	`199489`	`12383361`
						`57`	`13905`	`1560161`
							`105`	`54945`

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Last modified April 24 19:49 EDT 2024. Contains 371963 sequences. (Running on oeis4.)