A158823 - OEIS

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A158823 as a triangular array

1

3 1

6 2 2

10 3 4 3

15 4 6 6 4

21 5 8 9 8 5

28 6 10 12 12 10 6

36 7 12 15 16 15 12 7

45 8 14 18 20 20 18 14 8

55 9 16 21 24 25 24 21 16 9

66 10 18 24 28 30 30 28 24 18 10

78 11 20 27 32 35 36 35 32 27 20 11

A158823 as a square array

`1`	`3`	`6`	`10`	`15`	`21`	`28`	`36`	`45`	`55`	`66`	`78`
`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`

A158823 as an upper right triangle

`1`	`3`	`6`	`10`	`15`	`21`	`28`	`36`	`45`	`55`	`66`	`78`
	`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 April 25 13:02 EDT 2024. Contains 371969 sequences. (Running on oeis4.)