A189507 - OEIS

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A189507 as a triangular array

1

1 1

4 3 1

20 21 6 1

148 160 65 10 1

1348 1620 701 155 15 1

15104 19068 9324 2247 315 21 1

198144 264420 138016 38029 5908 574 28 1

2998656 4166880 2325740 692088 124029 13524 966 36 1

51290496 74011488 43448940 13945700 2723469 344961 27930 1530 45 1

979732224 1459381440 897020784 305142068 64711856 8996295 850905 53262 2310 55 1

A189507 as a square array

`1`	`1`	`4`	`20`	`148`	`1348`	`15104`	`198144`	`2998656`	`51290496`	`979732224`
`1`	`3`	`21`	`160`	`1620`	`19068`	`264420`	`4166880`	`74011488`	`1459381440`
`1`	`6`	`65`	`701`	`9324`	`138016`	`2325740`	`43448940`	`897020784`
`1`	`10`	`155`	`2247`	`38029`	`692088`	`13945700`	`305142068`
`1`	`15`	`315`	`5908`	`124029`	`2723469`	`64711856`
`1`	`21`	`574`	`13524`	`344961`	`8996295`
`1`	`28`	`966`	`27930`	`850905`
`1`	`36`	`1530`	`53262`
`1`	`45`	`2310`
`1`	`55`
`1`

A189507 as an upper right triangle

`1`	`1`	`4`	`20`	`148`	`1348`	`15104`	`198144`	`2998656`	`51290496`	`979732224`
	`1`	`3`	`21`	`160`	`1620`	`19068`	`264420`	`4166880`	`74011488`	`1459381440`
		`1`	`6`	`65`	`701`	`9324`	`138016`	`2325740`	`43448940`	`897020784`
			`1`	`10`	`155`	`2247`	`38029`	`692088`	`13945700`	`305142068`
				`1`	`15`	`315`	`5908`	`124029`	`2723469`	`64711856`
					`1`	`21`	`574`	`13524`	`344961`	`8996295`
						`1`	`28`	`966`	`27930`	`850905`
							`1`	`36`	`1530`	`53262`
								`1`	`45`	`2310`
									`1`	`55`
										`1`

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Last modified April 18 18:58 EDT 2024. Contains 371781 sequences. (Running on oeis4.)