A208054 - OEIS

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A208054 as a triangular array

1

1 1

2 2 2

5 15 15 5

15 203 716 203 15

52 4140 83440 83440 4140 52

203 115975 18171918 112073062 18171918 115975 203

877 4213597 6423127757 346212384169 346212384169 6423127757 4213597 877

4140 190899322

A208054 as a square array

`1`	`1`	`2`	`5`	`15`	`52`	`203`	`877`	`4140`
`1`	`2`	`15`	`203`	`4140`	`115975`	`4213597`	`190899322`
`2`	`15`	`716`	`83440`	`18171918`	`6423127757`
`5`	`203`	`83440`	`112073062`	`346212384169`
`15`	`4140`	`18171918`	`346212384169`
`52`	`115975`	`6423127757`
`203`	`4213597`
`877`

A208054 as an upper right triangle

`1`	`1`	`2`	`5`	`15`	`52`	`203`	`877`	`4140`
	`1`	`2`	`15`	`203`	`4140`	`115975`	`4213597`	`190899322`
		`2`	`15`	`716`	`83440`	`18171918`	`6423127757`
			`5`	`203`	`83440`	`112073062`	`346212384169`
				`15`	`4140`	`18171918`	`346212384169`
					`52`	`115975`	`6423127757`
						`203`	`4213597`
							`877`

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Last modified August 31 19:25 EDT 2024. Contains 375573 sequences. (Running on oeis4.)