A221971 - OEIS

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A221971 as a triangular array

1

0 1

0 1 1

0 0 4 1

0 0 3 11 1

0 0 0 27 26 1

0 0 0 17 148 57 1

0 0 0 0 278 646 120 1

0 0 0 0 155 2590 2481 247 1

0 0 0 0 0 4073 18304 8805 502 1

0 0 0 0 0 2073 58427 109699 29682 1013 1

0 0 0

A221971 as a square array

`1`	`0`	`0`	`0`	`0`	`0`	`0`	`0`	`0`	`0`	`0`	`0`
`1`	`1`	`0`	`0`	`0`	`0`	`0`	`0`	`0`	`0`	`0`
`1`	`4`	`3`	`0`	`0`	`0`	`0`	`0`	`0`	`0`
`1`	`11`	`27`	`17`	`0`	`0`	`0`	`0`
`1`	`26`	`148`	`278`	`155`	`0`	`0`
`1`	`57`	`646`	`2590`	`4073`	`2073`
`1`	`120`	`2481`	`18304`	`58427`
`1`	`247`	`8805`	`109699`
`1`	`502`	`29682`
`1`	`1013`
`1`

A221971 as an upper right triangle

`1`	`0`	`0`	`0`	`0`	`0`	`0`	`0`	`0`	`0`	`0`	`0`
	`1`	`1`	`0`	`0`	`0`	`0`	`0`	`0`	`0`	`0`	`0`
		`1`	`4`	`3`	`0`	`0`	`0`	`0`	`0`	`0`	`0`
			`1`	`11`	`27`	`17`	`0`	`0`	`0`	`0`
				`1`	`26`	`148`	`278`	`155`	`0`	`0`
					`1`	`57`	`646`	`2590`	`4073`	`2073`
						`1`	`120`	`2481`	`18304`	`58427`
							`1`	`247`	`8805`	`109699`
								`1`	`502`	`29682`
									`1`	`1013`
										`1`

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Last modified May 8 13:24 EDT 2024. Contains 372333 sequences. (Running on oeis4.)