A120913 - OEIS

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A120913 as a triangular array

1

3 2

6 5 4

10 8 9 7

15 13 12 14 11

21 18 17 19 20 16

28 25 24 23 26 27 22

36 32 31 30 33 34 35 29

45 41 39 40 38 42 43 44 37

55 50 49 48 47 51 52 53 54 46

66 61 59 58 60 57 62 63 64 65 56

78 72 70 69 71 68

A120913 as a square array

`1`	`3`	`6`	`10`	`15`	`21`	`28`	`36`	`45`	`55`	`66`	`78`
`2`	`5`	`8`	`13`	`18`	`25`	`32`	`41`	`50`	`61`	`72`
`4`	`9`	`12`	`17`	`24`	`31`	`39`	`49`	`59`	`70`
`7`	`14`	`19`	`23`	`30`	`40`	`48`	`58`	`69`
`11`	`20`	`26`	`33`	`38`	`47`	`60`	`71`
`16`	`27`	`34`	`42`	`51`	`57`	`68`
`22`	`35`	`43`	`52`	`62`
`29`	`44`	`53`	`63`
`37`	`54`	`64`
`46`	`65`
`56`

A120913 as an upper right triangle

`1`	`3`	`6`	`10`	`15`	`21`	`28`	`36`	`45`	`55`	`66`	`78`
	`2`	`5`	`8`	`13`	`18`	`25`	`32`	`41`	`50`	`61`	`72`
		`4`	`9`	`12`	`17`	`24`	`31`	`39`	`49`	`59`	`70`
			`7`	`14`	`19`	`23`	`30`	`40`	`48`	`58`	`69`
				`11`	`20`	`26`	`33`	`38`	`47`	`60`	`71`
					`16`	`27`	`34`	`42`	`51`	`57`	`68`
						`22`	`35`	`43`	`52`	`62`
							`29`	`44`	`53`	`63`
								`37`	`54`	`64`
									`46`	`65`
										`56`

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Last modified April 25 05:18 EDT 2024. Contains 371964 sequences. (Running on oeis4.)