A001404 - OEIS

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A001404 as a triangular array

1

1 1

2 2 1

4 5 2 1

9 11 5 2 1

20 25 12 5 2 1

45 57 27 12 5 2 1

102 129 62 28 12 5 2 1

231 293 141 64 28 12 5 2 1

524 665 321 146 65 28 12 5 2 1

1189 1510 729 333 148 65 28 12 5 2 1

2699 3428 1656

A001404 as a square array

`1`	`1`	`2`	`4`	`9`	`20`	`45`	`102`	`231`	`524`	`1189`	`2699`
`1`	`2`	`5`	`11`	`25`	`57`	`129`	`293`	`665`	`1510`	`3428`
`1`	`2`	`5`	`12`	`27`	`62`	`141`	`321`	`729`	`1656`
`1`	`2`	`5`	`12`	`28`	`64`	`146`	`333`
`1`	`2`	`5`	`12`	`28`	`65`	`148`
`1`	`2`	`5`	`12`	`28`	`65`
`1`	`2`	`5`	`12`	`28`
`1`	`2`	`5`	`12`
`1`	`2`	`5`
`1`	`2`
`1`

A001404 as an upper right triangle

`1`	`1`	`2`	`4`	`9`	`20`	`45`	`102`	`231`	`524`	`1189`	`2699`
	`1`	`2`	`5`	`11`	`25`	`57`	`129`	`293`	`665`	`1510`	`3428`
		`1`	`2`	`5`	`12`	`27`	`62`	`141`	`321`	`729`	`1656`
			`1`	`2`	`5`	`12`	`28`	`64`	`146`	`333`
				`1`	`2`	`5`	`12`	`28`	`65`	`148`
					`1`	`2`	`5`	`12`	`28`	`65`
						`1`	`2`	`5`	`12`	`28`
							`1`	`2`	`5`	`12`
								`1`	`2`	`5`
									`1`	`2`
										`1`

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Last modified April 24 13:56 EDT 2024. Contains 371958 sequences. (Running on oeis4.)