A277031 - OEIS

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A277031 as a triangular array

1

0 1

0 1 1

0 5 0 1

0 20 3 0 1

0 109 10 0 0 1

0 668 44 7 0 0 1

0 4801 210 28 0 0 0 1

0 38894 1320 90 15 0 0 0 1

0 353811 8439 554 75 0 0 0 0 1

0 3561512 63404 3542 310 31 0 0 0 0 1

0 39374609 517418 23298 1276 198 0 0 0 0 0 1

A277031 as a square array

`1`	`0`	`0`	`0`	`0`	`0`	`0`	`0`	`0`	`0`	`0`	`0`
`1`	`1`	`5`	`20`	`109`	`668`	`4801`	`38894`	`353811`	`3561512`	`39374609`
`1`	`0`	`3`	`10`	`44`	`210`	`1320`	`8439`	`63404`	`517418`
`1`	`0`	`0`	`7`	`28`	`90`	`554`	`3542`	`23298`
`1`	`0`	`0`	`0`	`15`	`75`	`310`	`1276`
`1`	`0`	`0`	`0`	`0`	`31`	`198`
`1`	`0`	`0`	`0`	`0`	`0`
`1`	`0`	`0`	`0`	`0`
`1`	`0`	`0`	`0`
`1`	`0`	`0`
`1`	`0`
`1`

A277031 as an upper right triangle

`1`	`0`	`0`	`0`	`0`	`0`	`0`	`0`	`0`	`0`	`0`	`0`
	`1`	`1`	`5`	`20`	`109`	`668`	`4801`	`38894`	`353811`	`3561512`	`39374609`
		`1`	`0`	`3`	`10`	`44`	`210`	`1320`	`8439`	`63404`	`517418`
			`1`	`0`	`0`	`7`	`28`	`90`	`554`	`3542`	`23298`
				`1`	`0`	`0`	`0`	`15`	`75`	`310`	`1276`
					`1`	`0`	`0`	`0`	`0`	`31`	`198`
						`1`	`0`	`0`	`0`	`0`	`0`
							`1`	`0`	`0`	`0`	`0`
								`1`	`0`	`0`	`0`
									`1`	`0`	`0`
										`1`	`0`
											`1`

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Last modified June 10 20:56 EDT 2023. Contains 363207 sequences. (Running on oeis4.)