A131689 as tables, graphs or sounds - OEIS

A131689 formatted as a triangular array:

1

0 1

0 1 2

0 1 6 6

0 1 14 36 24

0 1 30 150 240 120

0 1 62 540 1560 1800 720

0 1 126 1806 8400 16800 15120 5040

0 1 254 5796 40824 126000 191520 141120 40320

A131689 formatted as a square array:

`1`	`0`	`0`	`0`	`0`	`0`	`0`	`0`	`0`
`1`	`1`	`1`	`1`	`1`	`1`	`1`	`1`
`2`	`6`	`14`	`30`	`62`	`126`	`254`
`6`	`36`	`150`	`540`	`1806`	`5796`
`24`	`240`	`1560`	`8400`	`40824`
`120`	`1800`	`16800`	`126000`
`720`	`15120`	`191520`
`5040`	`141120`
`40320`

A131689 formatted as an upper right triangle:

`1`	`0`	`0`	`0`	`0`	`0`	`0`	`0`	`0`
	`1`	`1`	`1`	`1`	`1`	`1`	`1`	`1`
		`2`	`6`	`14`	`30`	`62`	`126`	`254`
			`6`	`36`	`150`	`540`	`1806`	`5796`
				`24`	`240`	`1560`	`8400`	`40824`
					`120`	`1800`	`16800`	`126000`
						`720`	`15120`	`191520`
							`5040`	`141120`
								`40320`

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Last modified November 29 12:46 EST 2009. Contains 167659 sequences.

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