A128813 - OEIS

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A128813 as a triangular array

1

1 1

1 4 3

1 10 27 18

1 20 127 288 180

1 35 427 2193 4500 2700

1 56 1162 11160 50553 97200 56700

1 84 2730 43696 363033 1512684 2778300 1587600

1 120 5754 141976 1936089 14581872 57234924 101606400 57153600

A128813 as a square array

`1`	`1`	`1`	`1`	`1`	`1`	`1`	`1`	`1`
`1`	`4`	`10`	`20`	`35`	`56`	`84`	`120`
`3`	`27`	`127`	`427`	`1162`	`2730`	`5754`
`18`	`288`	`2193`	`11160`	`43696`	`141976`
`180`	`4500`	`50553`	`363033`	`1936089`
`2700`	`97200`	`1512684`	`14581872`
`56700`	`2778300`	`57234924`
`1587600`	`101606400`
`57153600`

A128813 as an upper right triangle

`1`	`1`	`1`	`1`	`1`	`1`	`1`	`1`	`1`
	`1`	`4`	`10`	`20`	`35`	`56`	`84`	`120`
		`3`	`27`	`127`	`427`	`1162`	`2730`	`5754`
			`18`	`288`	`2193`	`11160`	`43696`	`141976`
				`180`	`4500`	`50553`	`363033`	`1936089`
					`2700`	`97200`	`1512684`	`14581872`
						`56700`	`2778300`	`57234924`
							`1587600`	`101606400`
								`57153600`

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Last modified June 11 03:41 EDT 2024. Contains 373288 sequences. (Running on oeis4.)