A003991 as tables, graphs or sounds - OEIS

A003991 formatted as a triangular array:

1

2 2

3 4 3

4 6 6 4

5 8 9 8 5

6 10 12 12 10 6

7 12 15 16 15 12 7

8 14 18 20 20 18 14 8

9 16 21 24 25 24 21 16 9

10 18 24 28 30 30 28 24 18 10

11 20 27 32 35 36 35 32 27 20 11

A003991 formatted as a square array:

`1`	`2`	`3`	`4`	`5`	`6`	`7`	`8`	`9`	`10`	`11`
`2`	`4`	`6`	`8`	`10`	`12`	`14`	`16`	`18`	`20`
`3`	`6`	`9`	`12`	`15`	`18`	`21`	`24`	`27`
`4`	`8`	`12`	`16`	`20`	`24`	`28`	`32`
`5`	`10`	`15`	`20`	`25`	`30`	`35`
`6`	`12`	`18`	`24`	`30`	`36`
`7`	`14`	`21`	`28`	`35`
`8`	`16`	`24`	`32`
`9`	`18`	`27`
`10`	`20`
`11`

A003991 formatted as an upper right triangle:

`1`	`2`	`3`	`4`	`5`	`6`	`7`	`8`	`9`	`10`	`11`
	`2`	`4`	`6`	`8`	`10`	`12`	`14`	`16`	`18`	`20`
		`3`	`6`	`9`	`12`	`15`	`18`	`21`	`24`	`27`
			`4`	`8`	`12`	`16`	`20`	`24`	`28`	`32`
				`5`	`10`	`15`	`20`	`25`	`30`	`35`
					`6`	`12`	`18`	`24`	`30`	`36`
						`7`	`14`	`21`	`28`	`35`
							`8`	`16`	`24`	`32`
								`9`	`18`	`27`
									`10`	`20`
										`11`

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Last modified November 27 22:38 EST 2009. Contains 167602 sequences.

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