A180977 - OEIS

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A180977 as a triangular array

1

1 1

0 1 0

0 1 1 0

0 1 5 1 0

0 0 8 8 0 0

0 0 9 50 9 0 0

0 0 6 181 181 6 0 0

0 0 3 438 1823 438 3 0 0

0 0 1 775 11700 11700 775 1 0 0

0 0 0 1039 58090 189359 58090 1039 0 0 0

0 0 0 1084 218120 2218249 2218249

A180977 as a square array

`1`	`1`	`0`	`0`	`0`	`0`	`0`	`0`	`0`	`0`	`0`	`0`
`1`	`1`	`1`	`1`	`0`	`0`	`0`	`0`	`0`	`0`	`0`
`0`	`1`	`5`	`8`	`9`	`6`	`3`	`1`	`0`	`0`
`0`	`1`	`8`	`50`	`181`	`438`	`775`	`1039`	`1084`
`0`	`0`	`9`	`181`	`1823`	`11700`	`58090`	`218120`
`0`	`0`	`6`	`438`	`11700`	`189359`	`2218249`
`0`	`0`	`3`	`775`	`58090`	`2218249`
`0`	`0`	`1`	`1039`
`0`	`0`	`0`
`0`	`0`
`0`

A180977 as an upper right triangle

`1`	`1`	`0`	`0`	`0`	`0`	`0`	`0`	`0`	`0`	`0`	`0`
	`1`	`1`	`1`	`1`	`0`	`0`	`0`	`0`	`0`	`0`	`0`
		`0`	`1`	`5`	`8`	`9`	`6`	`3`	`1`	`0`	`0`
			`0`	`1`	`8`	`50`	`181`	`438`	`775`	`1039`	`1084`
				`0`	`0`	`9`	`181`	`1823`	`11700`	`58090`	`218120`
					`0`	`0`	`6`	`438`	`11700`	`189359`	`2218249`
						`0`	`0`	`3`	`775`	`58090`	`2218249`
							`0`	`0`	`1`	`1039`
								`0`	`0`	`0`
									`0`	`0`
										`0`

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Last modified April 16 07:08 EDT 2024. Contains 371698 sequences. (Running on oeis4.)