A057145 - OEIS

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A057145 as a triangular array

1

1 2

1 3 3

1 4 6 4

1 5 9 10 5

1 6 12 16 15 6

1 7 15 22 25 21 7

1 8 18 28 35 36 28 8

1 9 21 34 45 51 49 36 9

1 10 24 40 55 66 70 64 45 10

1 11 27 46 65 81 91 92 81 55 11

1 12 30 52 75 96 112

A057145 as a square array

`1`	`1`	`1`	`1`	`1`	`1`	`1`	`1`	`1`	`1`	`1`	`1`
`2`	`3`	`4`	`5`	`6`	`7`	`8`	`9`	`10`	`11`	`12`
`3`	`6`	`9`	`12`	`15`	`18`	`21`	`24`	`27`	`30`
`4`	`10`	`16`	`22`	`28`	`34`	`40`	`46`	`52`
`5`	`15`	`25`	`35`	`45`	`55`	`65`	`75`
`6`	`21`	`36`	`51`	`66`	`81`	`96`
`7`	`28`	`49`	`70`	`91`	`112`
`8`	`36`	`64`	`92`
`9`	`45`	`81`
`10`	`55`
`11`

A057145 as an upper right triangle

`1`	`1`	`1`	`1`	`1`	`1`	`1`	`1`	`1`	`1`	`1`	`1`
	`2`	`3`	`4`	`5`	`6`	`7`	`8`	`9`	`10`	`11`	`12`
		`3`	`6`	`9`	`12`	`15`	`18`	`21`	`24`	`27`	`30`
			`4`	`10`	`16`	`22`	`28`	`34`	`40`	`46`	`52`
				`5`	`15`	`25`	`35`	`45`	`55`	`65`	`75`
					`6`	`21`	`36`	`51`	`66`	`81`	`96`
						`7`	`28`	`49`	`70`	`91`	`112`
							`8`	`36`	`64`	`92`
								`9`	`45`	`81`
									`10`	`55`
										`11`

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Last modified April 25 12:33 EDT 2024. Contains 371969 sequences. (Running on oeis4.)