A159841 - OEIS

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A159841 as a triangular array

1

4 1

21 7 1

120 45 10 1

715 286 78 13 1

4368 1820 560 120 16 1

27132 11628 3876 969 171 19 1

170544 74613 26334 7315 1540 231 22 1

1081575 480700 177100 53130 12650 2300 300 25 1

6906900 3108105 1184040 376740

A159841 as a square array

`1`	`4`	`21`	`120`	`715`	`4368`	`27132`	`170544`	`1081575`	`6906900`
`1`	`7`	`45`	`286`	`1820`	`11628`	`74613`	`480700`	`3108105`
`1`	`10`	`78`	`560`	`3876`	`26334`	`177100`	`1184040`
`1`	`13`	`120`	`969`	`7315`	`53130`	`376740`
`1`	`16`	`171`	`1540`	`12650`
`1`	`19`	`231`	`2300`
`1`	`22`	`300`
`1`	`25`
`1`

A159841 as an upper right triangle

`1`	`4`	`21`	`120`	`715`	`4368`	`27132`	`170544`	`1081575`	`6906900`
	`1`	`7`	`45`	`286`	`1820`	`11628`	`74613`	`480700`	`3108105`
		`1`	`10`	`78`	`560`	`3876`	`26334`	`177100`	`1184040`
			`1`	`13`	`120`	`969`	`7315`	`53130`	`376740`
				`1`	`16`	`171`	`1540`	`12650`
					`1`	`19`	`231`	`2300`
						`1`	`22`	`300`
							`1`	`25`
								`1`

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Last modified April 16 17:36 EDT 2024. Contains 371749 sequences. (Running on oeis4.)