A128140 - OEIS

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A128140 as a triangular array

1

3 2

7 5 3

13 10 7 4

21 17 13 9 5

31 26 21 16 11 6

43 37 31 25 19 13 7

57 50 43 36 29 22 15 8

73 65 57 49 41 33 25 17 9

91 82 73 64 55 46 37 28 19 10

A128140 as a square array

`1`	`3`	`7`	`13`	`21`	`31`	`43`	`57`	`73`	`91`
`2`	`5`	`10`	`17`	`26`	`37`	`50`	`65`	`82`
`3`	`7`	`13`	`21`	`31`	`43`	`57`	`73`
`4`	`9`	`16`	`25`	`36`	`49`	`64`
`5`	`11`	`19`	`29`	`41`	`55`
`6`	`13`	`22`	`33`	`46`
`7`	`15`	`25`	`37`
`8`	`17`	`28`
`9`	`19`
`10`

A128140 as an upper right triangle

`1`	`3`	`7`	`13`	`21`	`31`	`43`	`57`	`73`	`91`
	`2`	`5`	`10`	`17`	`26`	`37`	`50`	`65`	`82`
		`3`	`7`	`13`	`21`	`31`	`43`	`57`	`73`
			`4`	`9`	`16`	`25`	`36`	`49`	`64`
				`5`	`11`	`19`	`29`	`41`	`55`
					`6`	`13`	`22`	`33`	`46`
						`7`	`15`	`25`	`37`
							`8`	`17`	`28`
								`9`	`19`
									`10`

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Last modified April 24 18:05 EDT 2024. Contains 371962 sequences. (Running on oeis4.)