A008867 - OEIS

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A008867 as a triangular array

1

3 3

6 7 6

10 12 12 10

15 18 19 18 15

21 25 27 27 25 21

28 33 36 37 36 33 28

36 42 46 48 48 46 42 36

45 52 57 60 61 60 57 52 45

55 63 69 73 75 75 73 69 63 55

66 75 82 87 90 91 90 87 82 75 66

78 88 96 102 106 108 108 106 102 96 88 78

A008867 as a square array

`1`	`3`	`6`	`10`	`15`	`21`	`28`	`36`	`45`	`55`	`66`	`78`
`3`	`7`	`12`	`18`	`25`	`33`	`42`	`52`	`63`	`75`	`88`
`6`	`12`	`19`	`27`	`36`	`46`	`57`	`69`	`82`	`96`
`10`	`18`	`27`	`37`	`48`	`60`	`73`	`87`	`102`
`15`	`25`	`36`	`48`	`61`	`75`	`90`	`106`
`21`	`33`	`46`	`60`	`75`	`91`	`108`
`28`	`42`	`57`	`73`	`90`	`108`
`36`	`52`	`69`	`87`	`106`
`45`	`63`	`82`	`102`
`55`	`75`	`96`
`66`	`88`
`78`

A008867 as an upper right triangle

`1`	`3`	`6`	`10`	`15`	`21`	`28`	`36`	`45`	`55`	`66`	`78`
	`3`	`7`	`12`	`18`	`25`	`33`	`42`	`52`	`63`	`75`	`88`
		`6`	`12`	`19`	`27`	`36`	`46`	`57`	`69`	`82`	`96`
			`10`	`18`	`27`	`37`	`48`	`60`	`73`	`87`	`102`
				`15`	`25`	`36`	`48`	`61`	`75`	`90`	`106`
					`21`	`33`	`46`	`60`	`75`	`91`	`108`
						`28`	`42`	`57`	`73`	`90`	`108`
							`36`	`52`	`69`	`87`	`106`
								`45`	`63`	`82`	`102`
									`55`	`75`	`96`
										`66`	`88`
											`78`

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Last modified April 23 18:16 EDT 2024. Contains 371916 sequences. (Running on oeis4.)