A131422 - OEIS

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A131422 as a triangular array

1

3 5

6 8 11

10 12 15 19

15 17 20 24 29

21 23 26 30 35 41

28 30 33 37 42 48 55

36 38 41 45 50 56 63 71

45 47 50 54 59 65 72 80 89

55 57 60 64 69 75 82 90 99 109

A131422 as a square array

`1`	`3`	`6`	`10`	`15`	`21`	`28`	`36`	`45`	`55`
`5`	`8`	`12`	`17`	`23`	`30`	`38`	`47`	`57`
`11`	`15`	`20`	`26`	`33`	`41`	`50`	`60`
`19`	`24`	`30`	`37`	`45`	`54`	`64`
`29`	`35`	`42`	`50`	`59`	`69`
`41`	`48`	`56`	`65`	`75`
`55`	`63`	`72`	`82`
`71`	`80`	`90`
`89`	`99`
`109`

A131422 as an upper right triangle

`1`	`3`	`6`	`10`	`15`	`21`	`28`	`36`	`45`	`55`
	`5`	`8`	`12`	`17`	`23`	`30`	`38`	`47`	`57`
		`11`	`15`	`20`	`26`	`33`	`41`	`50`	`60`
			`19`	`24`	`30`	`37`	`45`	`54`	`64`
				`29`	`35`	`42`	`50`	`59`	`69`
					`41`	`48`	`56`	`65`	`75`
						`55`	`63`	`72`	`82`
							`71`	`80`	`90`
								`89`	`99`
									`109`

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