A261780 - OEIS

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A261780 as a triangular array

1

1 0

1 1 0

1 2 2 0

1 3 7 4 0

1 4 15 24 8 0

1 5 26 73 82 16 0

1 6 40 164 354 280 32 0

1 7 57 310 1031 1716 956 64 0

1 8 77 524 2395 6480 8318 3264 128 0

1 9 100 819 4803 18501 40728 40320 11144 256 0

A261780 as a square array

`1`	`1`	`1`	`1`	`1`	`1`	`1`	`1`	`1`	`1`	`1`
`0`	`1`	`2`	`3`	`4`	`5`	`6`	`7`	`8`	`9`
`0`	`2`	`7`	`15`	`26`	`40`	`57`	`77`	`100`
`0`	`4`	`24`	`73`	`164`	`310`	`524`	`819`
`0`	`8`	`82`	`354`	`1031`	`2395`	`4803`
`0`	`16`	`280`	`1716`	`6480`	`18501`
`0`	`32`	`956`	`8318`	`40728`
`0`	`64`	`3264`	`40320`
`0`	`128`	`11144`
`0`	`256`
`0`

A261780 as an upper right triangle

`1`	`1`	`1`	`1`	`1`	`1`	`1`	`1`	`1`	`1`	`1`
	`0`	`1`	`2`	`3`	`4`	`5`	`6`	`7`	`8`	`9`
		`0`	`2`	`7`	`15`	`26`	`40`	`57`	`77`	`100`
			`0`	`4`	`24`	`73`	`164`	`310`	`524`	`819`
				`0`	`8`	`82`	`354`	`1031`	`2395`	`4803`
					`0`	`16`	`280`	`1716`	`6480`	`18501`
						`0`	`32`	`956`	`8318`	`40728`
							`0`	`64`	`3264`	`40320`
								`0`	`128`	`11144`
									`0`	`256`
										`0`

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Last modified April 18 04:28 EDT 2024. Contains 371767 sequences. (Running on oeis4.)