A121775 - OEIS

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A121775 as a triangular array

1

1 1

2 3 1

3 5 3 1

4 8 7 4 1

5 9 10 10 5 1

6 15 20 21 15 6 1

7 13 21 35 35 21 7 1

8 20 36 60 71 56 28 8 1

9 21 42 86 126 126 84 36 9 1

10 27 59 130 215 253 210 120 45 10 1

11 21 55 165 330 462 462 330 165 55

A121775 as a square array

`1`	`1`	`2`	`3`	`4`	`5`	`6`	`7`	`8`	`9`	`10`	`11`
`1`	`3`	`5`	`8`	`9`	`15`	`13`	`20`	`21`	`27`	`21`
`1`	`3`	`7`	`10`	`20`	`21`	`36`	`42`	`59`	`55`
`1`	`4`	`10`	`21`	`35`	`60`	`86`	`130`	`165`
`1`	`5`	`15`	`35`	`71`	`126`	`215`	`330`
`1`	`6`	`21`	`56`	`126`	`253`	`462`
`1`	`7`	`28`	`84`	`210`	`462`
`1`	`8`	`36`	`120`	`330`
`1`	`9`	`45`	`165`
`1`	`10`	`55`
`1`

A121775 as an upper right triangle

`1`	`1`	`2`	`3`	`4`	`5`	`6`	`7`	`8`	`9`	`10`	`11`
	`1`	`3`	`5`	`8`	`9`	`15`	`13`	`20`	`21`	`27`	`21`
		`1`	`3`	`7`	`10`	`20`	`21`	`36`	`42`	`59`	`55`
			`1`	`4`	`10`	`21`	`35`	`60`	`86`	`130`	`165`
				`1`	`5`	`15`	`35`	`71`	`126`	`215`	`330`
					`1`	`6`	`21`	`56`	`126`	`253`	`462`
						`1`	`7`	`28`	`84`	`210`	`462`
							`1`	`8`	`36`	`120`	`330`
								`1`	`9`	`45`	`165`
									`1`	`10`	`55`
										`1`

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Last modified April 19 11:31 EDT 2024. Contains 371792 sequences. (Running on oeis4.)