A009766 - OEIS

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A009766 as a triangular array

1

1 1

1 2 2

1 3 5 5

1 4 9 14 14

1 5 14 28 42 42

1 6 20 48 90 132 132

1 7 27 75 165 297 429 429

1 8 35 110 275 572 1001 1430 1430

1 9 44 154 429 1001 2002 3432 4862 4862

1 10 54 208 637 1638 3640 7072 11934

A009766 as a square array

`1`	`1`	`1`	`1`	`1`	`1`	`1`	`1`	`1`	`1`	`1`
`1`	`2`	`3`	`4`	`5`	`6`	`7`	`8`	`9`	`10`
`2`	`5`	`9`	`14`	`20`	`27`	`35`	`44`	`54`
`5`	`14`	`28`	`48`	`75`	`110`	`154`	`208`
`14`	`42`	`90`	`165`	`275`	`429`	`637`
`42`	`132`	`297`	`572`	`1001`	`1638`
`132`	`429`	`1001`	`2002`	`3640`
`429`	`1430`	`3432`	`7072`
`1430`	`4862`	`11934`
`4862`

A009766 as an upper right triangle

`1`	`1`	`1`	`1`	`1`	`1`	`1`	`1`	`1`	`1`	`1`
	`1`	`2`	`3`	`4`	`5`	`6`	`7`	`8`	`9`	`10`
		`2`	`5`	`9`	`14`	`20`	`27`	`35`	`44`	`54`
			`5`	`14`	`28`	`48`	`75`	`110`	`154`	`208`
				`14`	`42`	`90`	`165`	`275`	`429`	`637`
					`42`	`132`	`297`	`572`	`1001`	`1638`
						`132`	`429`	`1001`	`2002`	`3640`
							`429`	`1430`	`3432`	`7072`
								`1430`	`4862`	`11934`
									`4862`

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Last modified April 29 17:47 EDT 2024. Contains 372114 sequences. (Running on oeis4.)