A104978 - OEIS

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A104978 as a triangular array

1

1 1

2 5 3

5 21 28 12

14 84 180 165 55

42 330 990 1430 1001 273

132 1287 5005 10010 10920 6188 1428

429 5005 24024 61880 92820 81396 38760 7752

1430 19448 111384 352716 678300 813960 596904 245157 43263

4862 75582 503880 1899240 4476780 6864396 6864396 4326300 1562275 246675

A104978 as a square array

`1`	`1`	`2`	`5`	`14`	`42`	`132`	`429`	`1430`	`4862`
`1`	`5`	`21`	`84`	`330`	`1287`	`5005`	`19448`	`75582`
`3`	`28`	`180`	`990`	`5005`	`24024`	`111384`	`503880`
`12`	`165`	`1430`	`10010`	`61880`	`352716`	`1899240`
`55`	`1001`	`10920`	`92820`	`678300`	`4476780`
`273`	`6188`	`81396`	`813960`	`6864396`
`1428`	`38760`	`596904`	`6864396`
`7752`	`245157`	`4326300`
`43263`	`1562275`
`246675`

A104978 as an upper right triangle

`1`	`1`	`2`	`5`	`14`	`42`	`132`	`429`	`1430`	`4862`
	`1`	`5`	`21`	`84`	`330`	`1287`	`5005`	`19448`	`75582`
		`3`	`28`	`180`	`990`	`5005`	`24024`	`111384`	`503880`
			`12`	`165`	`1430`	`10010`	`61880`	`352716`	`1899240`
				`55`	`1001`	`10920`	`92820`	`678300`	`4476780`
					`273`	`6188`	`81396`	`813960`	`6864396`
						`1428`	`38760`	`596904`	`6864396`
							`7752`	`245157`	`4326300`
								`43263`	`1562275`
									`246675`

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Last modified April 25 16:23 EDT 2024. Contains 371989 sequences. (Running on oeis4.)