A085880 - OEIS

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A085880 as a triangular array

1

1 1

2 4 2

5 15 15 5

14 56 84 56 14

42 210 420 420 210 42

132 792 1980 2640 1980 792 132

429 3003 9009 15015 15015 9009 3003 429

1430 11440 40040 80080 100100 80080 40040 11440 1430

4862 43758 175032 408408 612612 612612 408408 175032 43758 4862

A085880 as a square array

`1`	`1`	`2`	`5`	`14`	`42`	`132`	`429`	`1430`	`4862`
`1`	`4`	`15`	`56`	`210`	`792`	`3003`	`11440`	`43758`
`2`	`15`	`84`	`420`	`1980`	`9009`	`40040`	`175032`
`5`	`56`	`420`	`2640`	`15015`	`80080`	`408408`
`14`	`210`	`1980`	`15015`	`100100`	`612612`
`42`	`792`	`9009`	`80080`	`612612`
`132`	`3003`	`40040`	`408408`
`429`	`11440`	`175032`
`1430`	`43758`
`4862`

A085880 as an upper right triangle

`1`	`1`	`2`	`5`	`14`	`42`	`132`	`429`	`1430`	`4862`
	`1`	`4`	`15`	`56`	`210`	`792`	`3003`	`11440`	`43758`
		`2`	`15`	`84`	`420`	`1980`	`9009`	`40040`	`175032`
			`5`	`56`	`420`	`2640`	`15015`	`80080`	`408408`
				`14`	`210`	`1980`	`15015`	`100100`	`612612`
					`42`	`792`	`9009`	`80080`	`612612`
						`132`	`3003`	`40040`	`408408`
							`429`	`11440`	`175032`
								`1430`	`43758`
									`4862`

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Last modified September 3 00:14 EDT 2024. Contains 375621 sequences. (Running on oeis4.)