A033820 - OEIS

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A033820 as a triangular array

1

1 3

2 4 10

5 9 15 35

14 24 36 56 126

42 70 100 140 210 462

132 216 300 400 540 792 1716

429 693 945 1225 1575 2079 3003 6435

1430 2288 3080 3920 4900 6160 8008 11440 24310

4862 7722 10296 12936 15876 19404

A033820 as a square array

`1`	`1`	`2`	`5`	`14`	`42`	`132`	`429`	`1430`	`4862`
`3`	`4`	`9`	`24`	`70`	`216`	`693`	`2288`	`7722`
`10`	`15`	`36`	`100`	`300`	`945`	`3080`	`10296`
`35`	`56`	`140`	`400`	`1225`	`3920`	`12936`
`126`	`210`	`540`	`1575`	`4900`	`15876`
`462`	`792`	`2079`	`6160`	`19404`
`1716`	`3003`	`8008`
`6435`	`11440`
`24310`

A033820 as an upper right triangle

`1`	`1`	`2`	`5`	`14`	`42`	`132`	`429`	`1430`	`4862`
	`3`	`4`	`9`	`24`	`70`	`216`	`693`	`2288`	`7722`
		`10`	`15`	`36`	`100`	`300`	`945`	`3080`	`10296`
			`35`	`56`	`140`	`400`	`1225`	`3920`	`12936`
				`126`	`210`	`540`	`1575`	`4900`	`15876`
					`462`	`792`	`2079`	`6160`	`19404`
						`1716`	`3003`	`8008`
							`6435`	`11440`
								`24310`

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Last modified April 25 09:38 EDT 2024. Contains 371967 sequences. (Running on oeis4.)