A278390 - OEIS

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A278390 as a triangular array

1

1 1

1 3 3

1 6 14 16

1 10 40 85 105

1 15 90 295 594 771

1 21 175 805 2331 4529 6083

1 28 308 1876 7280 19348 36644 50464

1 36 504 3906 19404 66780 166608 309537 434493

1 45 780 7470 45990 197484 621180 1476135 2701610 3849715

A278390 as a square array

`1`	`1`	`1`	`1`	`1`	`1`	`1`	`1`	`1`	`1`
`1`	`3`	`6`	`10`	`15`	`21`	`28`	`36`	`45`
`3`	`14`	`40`	`90`	`175`	`308`	`504`	`780`
`16`	`85`	`295`	`805`	`1876`	`3906`	`7470`
`105`	`594`	`2331`	`7280`	`19404`	`45990`
`771`	`4529`	`19348`	`66780`	`197484`
`6083`	`36644`	`166608`	`621180`
`50464`	`309537`	`1476135`
`434493`	`2701610`
`3849715`

A278390 as an upper right triangle

`1`	`1`	`1`	`1`	`1`	`1`	`1`	`1`	`1`	`1`
	`1`	`3`	`6`	`10`	`15`	`21`	`28`	`36`	`45`
		`3`	`14`	`40`	`90`	`175`	`308`	`504`	`780`
			`16`	`85`	`295`	`805`	`1876`	`3906`	`7470`
				`105`	`594`	`2331`	`7280`	`19404`	`45990`
					`771`	`4529`	`19348`	`66780`	`197484`
						`6083`	`36644`	`166608`	`621180`
							`50464`	`309537`	`1476135`
								`434493`	`2701610`
									`3849715`

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Last modified June 7 01:45 EDT 2024. Contains 373140 sequences. (Running on oeis4.)