A122177 - OEIS

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A122177 as a triangular array

1

3 1

6 4 1

10 10 6 1

15 20 21 9 1

21 35 56 45 13 1

28 56 126 165 91 18 1

36 84 252 495 455 171 24 1

45 120 462 1287 1820 1140 300 31 1

55 165 792 3003 6188 5985 2600 496 39 1

66 220 1287 6435 18564 26334

A122177 as a square array

`1`	`3`	`6`	`10`	`15`	`21`	`28`	`36`	`45`	`55`	`66`
`1`	`4`	`10`	`20`	`35`	`56`	`84`	`120`	`165`	`220`
`1`	`6`	`21`	`56`	`126`	`252`	`462`	`792`	`1287`
`1`	`9`	`45`	`165`	`495`	`1287`	`3003`	`6435`
`1`	`13`	`91`	`455`	`1820`	`6188`	`18564`
`1`	`18`	`171`	`1140`	`5985`	`26334`
`1`	`24`	`300`	`2600`
`1`	`31`	`496`
`1`	`39`
`1`

A122177 as an upper right triangle

`1`	`3`	`6`	`10`	`15`	`21`	`28`	`36`	`45`	`55`	`66`
	`1`	`4`	`10`	`20`	`35`	`56`	`84`	`120`	`165`	`220`
		`1`	`6`	`21`	`56`	`126`	`252`	`462`	`792`	`1287`
			`1`	`9`	`45`	`165`	`495`	`1287`	`3003`	`6435`
				`1`	`13`	`91`	`455`	`1820`	`6188`	`18564`
					`1`	`18`	`171`	`1140`	`5985`	`26334`
						`1`	`24`	`300`	`2600`
							`1`	`31`	`496`
								`1`	`39`
									`1`

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Last modified May 19 04:28 EDT 2024. Contains 372666 sequences. (Running on oeis4.)