A145580 - OEIS

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A145580 as a triangular array

1

1 1

0 1 2

-1 0 2 3

0 -1 0 3 4

1 0 -2 0 4 6

0 1 0 -3 0 6 9

-1 0 2 0 -4 0 9 13

0 -1 0 3 0 -6 0 13 19

1 0 -2 0 4 0 -9 0 19 28

A145580 as a square array

`1`	`1`	`0`	`-1`	`0`	`1`	`0`	`-1`	`0`	`1`
`1`	`1`	`0`	`-1`	`0`	`1`	`0`	`-1`	`0`
`2`	`2`	`0`	`-2`	`0`	`2`	`0`	`-2`
`3`	`3`	`0`	`-3`	`0`	`3`	`0`
`4`	`4`	`0`	`-4`	`0`	`4`
`6`	`6`	`0`	`-6`	`0`
`9`	`9`	`0`	`-9`
`13`	`13`	`0`
`19`	`19`
`28`

A145580 as an upper right triangle

`1`	`1`	`0`	`-1`	`0`	`1`	`0`	`-1`	`0`	`1`
	`1`	`1`	`0`	`-1`	`0`	`1`	`0`	`-1`	`0`
		`2`	`2`	`0`	`-2`	`0`	`2`	`0`	`-2`
			`3`	`3`	`0`	`-3`	`0`	`3`	`0`
				`4`	`4`	`0`	`-4`	`0`	`4`
					`6`	`6`	`0`	`-6`	`0`
						`9`	`9`	`0`	`-9`
							`13`	`13`	`0`
								`19`	`19`
									`28`

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Last modified August 9 11:50 EDT 2024. Contains 375042 sequences. (Running on oeis4.)