A011971 - OEIS

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A011971 as a triangular array

1

1 2

2 3 5

5 7 10 15

15 20 27 37 52

52 67 87 114 151 203

203 255 322 409 523 674 877

877 1080 1335 1657 2066 2589 3263 4140

4140 5017 6097 7432 9089 11155 13744 17007 21147

21147 25287 30304 36401 43833 52922 64077 77821 94828 115975

A011971 as a square array

`1`	`1`	`2`	`5`	`15`	`52`	`203`	`877`	`4140`	`21147`
`2`	`3`	`7`	`20`	`67`	`255`	`1080`	`5017`	`25287`
`5`	`10`	`27`	`87`	`322`	`1335`	`6097`	`30304`
`15`	`37`	`114`	`409`	`1657`	`7432`	`36401`
`52`	`151`	`523`	`2066`	`9089`	`43833`
`203`	`674`	`2589`	`11155`	`52922`
`877`	`3263`	`13744`	`64077`
`4140`	`17007`	`77821`
`21147`	`94828`
`115975`

A011971 as an upper right triangle

`1`	`1`	`2`	`5`	`15`	`52`	`203`	`877`	`4140`	`21147`
	`2`	`3`	`7`	`20`	`67`	`255`	`1080`	`5017`	`25287`
		`5`	`10`	`27`	`87`	`322`	`1335`	`6097`	`30304`
			`15`	`37`	`114`	`409`	`1657`	`7432`	`36401`
				`52`	`151`	`523`	`2066`	`9089`	`43833`
					`203`	`674`	`2589`	`11155`	`52922`
						`877`	`3263`	`13744`	`64077`
							`4140`	`17007`	`77821`
								`21147`	`94828`
									`115975`

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Last modified April 18 13:48 EDT 2024. Contains 371780 sequences. (Running on oeis4.)