A305621 - OEIS

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A305621 as a triangular array

1

1 1

1 4 3

1 8 18 12

1 18 78 120 60

1 34 273 780 900 360

1 70 921 4212 8400 7560 2520

1 134 2916 20424 63000 95760 70560 20160

1 270 9150 93360 417120 952560 1164240 725760 181440

1 526 28065 409380 2551560 8217720 14817600 15120000 8164800 1814400

1 1054 85773 1749780 14804700 64615680 161247240 239500800 209563200 99792000 19958400

A305621 as a square array

`1`	`1`	`1`	`1`	`1`	`1`	`1`	`1`	`1`	`1`	`1`
`1`	`4`	`8`	`18`	`34`	`70`	`134`	`270`	`526`	`1054`
`3`	`18`	`78`	`273`	`921`	`2916`	`9150`	`28065`	`85773`
`12`	`120`	`780`	`4212`	`20424`	`93360`	`409380`	`1749780`
`60`	`900`	`8400`	`63000`	`417120`	`2551560`	`14804700`
`360`	`7560`	`95760`	`952560`	`8217720`	`64615680`
`2520`	`70560`	`1164240`	`14817600`	`161247240`
`20160`	`725760`	`15120000`	`239500800`
`181440`	`8164800`	`209563200`
`1814400`	`99792000`
`19958400`

A305621 as an upper right triangle

`1`	`1`	`1`	`1`	`1`	`1`	`1`	`1`	`1`	`1`	`1`
	`1`	`4`	`8`	`18`	`34`	`70`	`134`	`270`	`526`	`1054`
		`3`	`18`	`78`	`273`	`921`	`2916`	`9150`	`28065`	`85773`
			`12`	`120`	`780`	`4212`	`20424`	`93360`	`409380`	`1749780`
				`60`	`900`	`8400`	`63000`	`417120`	`2551560`	`14804700`
					`360`	`7560`	`95760`	`952560`	`8217720`	`64615680`
						`2520`	`70560`	`1164240`	`14817600`	`161247240`
							`20160`	`725760`	`15120000`	`239500800`
								`181440`	`8164800`	`209563200`
									`1814400`	`99792000`
										`19958400`

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Last modified September 18 10:24 EDT 2024. Contains 375999 sequences. (Running on oeis4.)