A111808 as tables, graphs or sounds - OEIS

A111808 formatted as a triangular array:

1

1 1

1 2 3

1 3 6 7

1 4 10 16 19

1 5 15 30 45 51

1 6 21 50 90 126 141

1 7 28 77 161 266 357 393

1 8 36 112 266 504 784 1016 1107

1 9 45 156 414 882 1554 2304 2907 3139

A111808 formatted as a square array:

`1`	`1`	`1`	`1`	`1`	`1`	`1`	`1`	`1`	`1`
`1`	`2`	`3`	`4`	`5`	`6`	`7`	`8`	`9`
`3`	`6`	`10`	`15`	`21`	`28`	`36`	`45`
`7`	`16`	`30`	`50`	`77`	`112`	`156`
`19`	`45`	`90`	`161`	`266`	`414`
`51`	`126`	`266`	`504`	`882`
`141`	`357`	`784`	`1554`
`393`	`1016`	`2304`
`1107`	`2907`
`3139`

A111808 formatted as an upper right triangle:

`1`	`1`	`1`	`1`	`1`	`1`	`1`	`1`	`1`	`1`
	`1`	`2`	`3`	`4`	`5`	`6`	`7`	`8`	`9`
		`3`	`6`	`10`	`15`	`21`	`28`	`36`	`45`
			`7`	`16`	`30`	`50`	`77`	`112`	`156`
				`19`	`45`	`90`	`161`	`266`	`414`
					`51`	`126`	`266`	`504`	`882`
						`141`	`357`	`784`	`1554`
							`393`	`1016`	`2304`
								`1107`	`2907`
									`3139`

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Last modified December 8 08:31 EST 2009. Contains 170430 sequences.

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