A046521 - OEIS

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A046521 as a triangular array

1

2 1

6 6 1

20 30 10 1

70 140 70 14 1

252 630 420 126 18 1

924 2772 2310 924 198 22 1

3432 12012 12012 6006 1716 286 26 1

12870 51480 60060 36036 12870 2860 390 30 1

48620 218790 291720 204204 87516 24310

A046521 as a square array

`1`	`2`	`6`	`20`	`70`	`252`	`924`	`3432`	`12870`	`48620`
`1`	`6`	`30`	`140`	`630`	`2772`	`12012`	`51480`	`218790`
`1`	`10`	`70`	`420`	`2310`	`12012`	`60060`	`291720`
`1`	`14`	`126`	`924`	`6006`	`36036`	`204204`
`1`	`18`	`198`	`1716`	`12870`	`87516`
`1`	`22`	`286`	`2860`	`24310`
`1`	`26`	`390`
`1`	`30`
`1`

A046521 as an upper right triangle

`1`	`2`	`6`	`20`	`70`	`252`	`924`	`3432`	`12870`	`48620`
	`1`	`6`	`30`	`140`	`630`	`2772`	`12012`	`51480`	`218790`
		`1`	`10`	`70`	`420`	`2310`	`12012`	`60060`	`291720`
			`1`	`14`	`126`	`924`	`6006`	`36036`	`204204`
				`1`	`18`	`198`	`1716`	`12870`	`87516`
					`1`	`22`	`286`	`2860`	`24310`
						`1`	`26`	`390`
							`1`	`30`
								`1`

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Last modified April 25 13:27 EDT 2024. Contains 371971 sequences. (Running on oeis4.)