A128228 - OEIS

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A128228 as a triangular array

1

2 2

3 6 3

4 8 12 4

5 10 15 20 5

6 12 18 24 30 6

7 14 21 28 35 42 7

8 16 24 32 40 48 56 8

9 18 27 36 45 54 63 72 9

10 20 30 40 50 60 70 80 90 10

A128228 as a square array

`1`	`2`	`3`	`4`	`5`	`6`	`7`	`8`	`9`	`10`
`2`	`6`	`8`	`10`	`12`	`14`	`16`	`18`	`20`
`3`	`12`	`15`	`18`	`21`	`24`	`27`	`30`
`4`	`20`	`24`	`28`	`32`	`36`	`40`
`5`	`30`	`35`	`40`	`45`	`50`
`6`	`42`	`48`	`54`	`60`
`7`	`56`	`63`	`70`
`8`	`72`	`80`
`9`	`90`
`10`

A128228 as an upper right triangle

`1`	`2`	`3`	`4`	`5`	`6`	`7`	`8`	`9`	`10`
	`2`	`6`	`8`	`10`	`12`	`14`	`16`	`18`	`20`
		`3`	`12`	`15`	`18`	`21`	`24`	`27`	`30`
			`4`	`20`	`24`	`28`	`32`	`36`	`40`
				`5`	`30`	`35`	`40`	`45`	`50`
					`6`	`42`	`48`	`54`	`60`
						`7`	`56`	`63`	`70`
							`8`	`72`	`80`
								`9`	`90`
									`10`

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Last modified April 23 11:35 EDT 2024. Contains 371912 sequences. (Running on oeis4.)