A108426 - OEIS

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A108426 as a triangular array

1

1 1

3 5 2

12 28 21 5

55 165 180 84 14

273 1001 1430 990 330 42

1428 6188 10920 10010 5005 1287 132

7752 38760 81396 92820 61880 24024 5005 429

43263 245157 596904 813960 678300 352716 111384 19448 1430

246675

A108426 as a square array

`1`	`1`	`3`	`12`	`55`	`273`	`1428`	`7752`	`43263`	`246675`
`1`	`5`	`28`	`165`	`1001`	`6188`	`38760`	`245157`
`2`	`21`	`180`	`1430`	`10920`	`81396`	`596904`
`5`	`84`	`990`	`10010`	`92820`	`813960`
`14`	`330`	`5005`	`61880`	`678300`
`42`	`1287`	`24024`	`352716`
`132`	`5005`	`111384`
`429`	`19448`
`1430`

A108426 as an upper right triangle

`1`	`1`	`3`	`12`	`55`	`273`	`1428`	`7752`	`43263`	`246675`
	`1`	`5`	`28`	`165`	`1001`	`6188`	`38760`	`245157`
		`2`	`21`	`180`	`1430`	`10920`	`81396`	`596904`
			`5`	`84`	`990`	`10010`	`92820`	`813960`
				`14`	`330`	`5005`	`61880`	`678300`
					`42`	`1287`	`24024`	`352716`
						`132`	`5005`	`111384`
							`429`	`19448`
								`1430`

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Last modified September 12 12:46 EDT 2024. Contains 375851 sequences. (Running on oeis4.)