A154690 - OEIS

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A154690 as a triangular array

2

3 3

5 8 5

9 18 18 9

17 40 48 40 17

33 90 120 120 90 33

65 204 300 320 300 204 65

129 462 756 840 840 756 462 129

257 1040 1904 2240 2240 2240 1904 1040 257

513 2322 4752 6048 6048 6048 6048 4752 2322 513

A154690 as a square array

`2`	`3`	`5`	`9`	`17`	`33`	`65`	`129`	`257`	`513`
`3`	`8`	`18`	`40`	`90`	`204`	`462`	`1040`	`2322`
`5`	`18`	`48`	`120`	`300`	`756`	`1904`	`4752`
`9`	`40`	`120`	`320`	`840`	`2240`	`6048`
`17`	`90`	`300`	`840`	`2240`	`6048`
`33`	`204`	`756`	`2240`	`6048`
`65`	`462`	`1904`	`6048`
`129`	`1040`	`4752`
`257`	`2322`
`513`

A154690 as an upper right triangle

`2`	`3`	`5`	`9`	`17`	`33`	`65`	`129`	`257`	`513`
	`3`	`8`	`18`	`40`	`90`	`204`	`462`	`1040`	`2322`
		`5`	`18`	`48`	`120`	`300`	`756`	`1904`	`4752`
			`9`	`40`	`120`	`320`	`840`	`2240`	`6048`
				`17`	`90`	`300`	`840`	`2240`	`6048`
					`33`	`204`	`756`	`2240`	`6048`
						`65`	`462`	`1904`	`6048`
							`129`	`1040`	`4752`
								`257`	`2322`
									`513`

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Last modified May 6 13:11 EDT 2024. Contains 372293 sequences. (Running on oeis4.)