A181853 - OEIS

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A181853 as a triangular array

1

1 1

1 3 2

1 6 11 6

1 10 31 34 12

1 15 81 189 182 60

1 21 141 393 494 282 60

1 28 288 1380 3245 3740 2034 420

1 36 456 2716 8293 13268 11338 4908 840

1 45 726 5578 22207 47351 57598 40602 15564 2520

A181853 as a square array

`1`	`1`	`1`	`1`	`1`	`1`	`1`	`1`	`1`	`1`
`1`	`3`	`6`	`10`	`15`	`21`	`28`	`36`	`45`
`2`	`11`	`31`	`81`	`141`	`288`	`456`	`726`
`6`	`34`	`189`	`393`	`1380`	`2716`	`5578`
`12`	`182`	`494`	`3245`	`8293`	`22207`
`60`	`282`	`3740`	`13268`	`47351`
`60`	`2034`	`11338`	`57598`
`420`	`4908`	`40602`
`840`	`15564`
`2520`

A181853 as an upper right triangle

`1`	`1`	`1`	`1`	`1`	`1`	`1`	`1`	`1`	`1`
	`1`	`3`	`6`	`10`	`15`	`21`	`28`	`36`	`45`
		`2`	`11`	`31`	`81`	`141`	`288`	`456`	`726`
			`6`	`34`	`189`	`393`	`1380`	`2716`	`5578`
				`12`	`182`	`494`	`3245`	`8293`	`22207`
					`60`	`282`	`3740`	`13268`	`47351`
						`60`	`2034`	`11338`	`57598`
							`420`	`4908`	`40602`
								`840`	`15564`
									`2520`

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Last modified April 19 07:11 EDT 2024. Contains 371782 sequences. (Running on oeis4.)