A000027 - OEIS

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A000027 as a triangular array

1

2 3

4 5 6

7 8 9 10

11 12 13 14 15

16 17 18 19 20 21

22 23 24 25 26 27 28

29 30 31 32 33 34 35 36

37 38 39 40 41 42 43 44 45

46 47 48 49 50 51 52 53 54 55

56 57 58 59 60 61 62 63 64 65 66

67 68 69 70 71 72 73 74 75 76 77

A000027 as a square array

`1`	`2`	`4`	`7`	`11`	`16`	`22`	`29`	`37`	`46`	`56`	`67`
`3`	`5`	`8`	`12`	`17`	`23`	`30`	`38`	`47`	`57`	`68`
`6`	`9`	`13`	`18`	`24`	`31`	`39`	`48`	`58`	`69`
`10`	`14`	`19`	`25`	`32`	`40`	`49`	`59`	`70`
`15`	`20`	`26`	`33`	`41`	`50`	`60`	`71`
`21`	`27`	`34`	`42`	`51`	`61`	`72`
`28`	`35`	`43`	`52`	`62`	`73`
`36`	`44`	`53`	`63`	`74`
`45`	`54`	`64`	`75`
`55`	`65`	`76`
`66`	`77`

A000027 as an upper right triangle

`1`	`2`	`4`	`7`	`11`	`16`	`22`	`29`	`37`	`46`	`56`	`67`
	`3`	`5`	`8`	`12`	`17`	`23`	`30`	`38`	`47`	`57`	`68`
		`6`	`9`	`13`	`18`	`24`	`31`	`39`	`48`	`58`	`69`
			`10`	`14`	`19`	`25`	`32`	`40`	`49`	`59`	`70`
				`15`	`20`	`26`	`33`	`41`	`50`	`60`	`71`
					`21`	`27`	`34`	`42`	`51`	`61`	`72`
						`28`	`35`	`43`	`52`	`62`	`73`
							`36`	`44`	`53`	`63`	`74`
								`45`	`54`	`64`	`75`
									`55`	`65`	`76`
										`66`	`77`

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Last modified May 24 00:43 EDT 2013. Contains 225613 sequences.