A020474 as tables, graphs or sounds - OEIS

A020474 formatted as a triangular array:

1

0 1

0 1 2

0 0 2 4

0 0 1 5 9

0 0 0 3 12 21

0 0 0 1 9 30 51

0 0 0 0 4 25 76 127

0 0 0 0 1 14 69 196 323

0 0 0 0 0 5 44 189 512 835

0 0 0 0 0 1 20 133 518 1353 2188

0 0 0 0 0 0 6 70 392 1422 3610 5798

A020474 formatted as a square array:

`1`	`0`	`0`	`0`	`0`	`0`	`0`	`0`	`0`	`0`	`0`	`0`
`1`	`1`	`0`	`0`	`0`	`0`	`0`	`0`	`0`	`0`	`0`
`2`	`2`	`1`	`0`	`0`	`0`	`0`	`0`	`0`	`0`
`4`	`5`	`3`	`1`	`0`	`0`	`0`	`0`	`0`
`9`	`12`	`9`	`4`	`1`	`0`	`0`	`0`
`21`	`30`	`25`	`14`	`5`	`1`	`0`
`51`	`76`	`69`	`44`	`20`	`6`
`127`	`196`	`189`	`133`	`70`
`323`	`512`	`518`	`392`
`835`	`1353`	`1422`
`2188`	`3610`
`5798`

A020474 formatted as an upper right triangle:

`1`	`0`	`0`	`0`	`0`	`0`	`0`	`0`	`0`	`0`	`0`	`0`
	`1`	`1`	`0`	`0`	`0`	`0`	`0`	`0`	`0`	`0`	`0`
		`2`	`2`	`1`	`0`	`0`	`0`	`0`	`0`	`0`	`0`
			`4`	`5`	`3`	`1`	`0`	`0`	`0`	`0`	`0`
				`9`	`12`	`9`	`4`	`1`	`0`	`0`	`0`
					`21`	`30`	`25`	`14`	`5`	`1`	`0`
						`51`	`76`	`69`	`44`	`20`	`6`
							`127`	`196`	`189`	`133`	`70`
								`323`	`512`	`518`	`392`
									`835`	`1353`	`1422`
										`2188`	`3610`
											`5798`

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Last modified December 17 19:39 EST 2009. Contains 170821 sequences.

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