A111805 - OEIS

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A111805 as a triangular array

1

1 1

1 15 1

1 70 45 1

1 210 495 91 1

1 495 3003 1820 153 1

1 1001 12870 18564 4845 231 1

1 1820 43758 125970 74613 10626 325 1

1 3060 125970 646646 735471 230230 20475 435 1

1 4845 319770 2704156 5311735

A111805 as a square array

`1`	`1`	`1`	`1`	`1`	`1`	`1`	`1`	`1`	`1`
`1`	`15`	`70`	`210`	`495`	`1001`	`1820`	`3060`	`4845`
`1`	`45`	`495`	`3003`	`12870`	`43758`	`125970`	`319770`
`1`	`91`	`1820`	`18564`	`125970`	`646646`	`2704156`
`1`	`153`	`4845`	`74613`	`735471`	`5311735`
`1`	`231`	`10626`	`230230`
`1`	`325`	`20475`
`1`	`435`
`1`

A111805 as an upper right triangle

`1`	`1`	`1`	`1`	`1`	`1`	`1`	`1`	`1`	`1`
	`1`	`15`	`70`	`210`	`495`	`1001`	`1820`	`3060`	`4845`
		`1`	`45`	`495`	`3003`	`12870`	`43758`	`125970`	`319770`
			`1`	`91`	`1820`	`18564`	`125970`	`646646`	`2704156`
				`1`	`153`	`4845`	`74613`	`735471`	`5311735`
					`1`	`231`	`10626`	`230230`
						`1`	`325`	`20475`
							`1`	`435`
								`1`

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Last modified May 13 11:43 EDT 2024. Contains 372504 sequences. (Running on oeis4.)