A271238 - OEIS

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A271238 as a triangular array

1

2 1

3 3 1

6 12 8 1

10 30 30 10 1

15 60 80 45 12 1

21 105 175 140 63 14 1

28 168 336 350 224 84 16 1

36 252 588 756 630 336 108 18 1

45 360 960 1470 1512 1050 480 135 20 1

55 495 1485 2640 3234 2772 1650 660 165 22 1

A271238 as a square array

`1`	`2`	`3`	`6`	`10`	`15`	`21`	`28`	`36`	`45`	`55`
`1`	`3`	`12`	`30`	`60`	`105`	`168`	`252`	`360`	`495`
`1`	`8`	`30`	`80`	`175`	`336`	`588`	`960`	`1485`
`1`	`10`	`45`	`140`	`350`	`756`	`1470`	`2640`
`1`	`12`	`63`	`224`	`630`	`1512`	`3234`
`1`	`14`	`84`	`336`	`1050`	`2772`
`1`	`16`	`108`	`480`	`1650`
`1`	`18`	`135`	`660`
`1`	`20`	`165`
`1`	`22`
`1`

A271238 as an upper right triangle

`1`	`2`	`3`	`6`	`10`	`15`	`21`	`28`	`36`	`45`	`55`
	`1`	`3`	`12`	`30`	`60`	`105`	`168`	`252`	`360`	`495`
		`1`	`8`	`30`	`80`	`175`	`336`	`588`	`960`	`1485`
			`1`	`10`	`45`	`140`	`350`	`756`	`1470`	`2640`
				`1`	`12`	`63`	`224`	`630`	`1512`	`3234`
					`1`	`14`	`84`	`336`	`1050`	`2772`
						`1`	`16`	`108`	`480`	`1650`
							`1`	`18`	`135`	`660`
								`1`	`20`	`165`
									`1`	`22`
										`1`

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Last modified April 25 04:42 EDT 2024. Contains 371964 sequences. (Running on oeis4.)