A286880 - OEIS

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A286880 as a triangular array

1

2 1

2 3 1

2 4 5 1

2 5 10 9 1

4 6 17 28 17 1

2 12 26 65 82 33 1

2 8 50 126 257 244 65 1

2 9 50 252 626 1025 730 129 1

4 10 65 344 1394 3126 4097 2188 257 1

2 18 82 513 2402 8052 15626 16385 6562 513 1

4 12 130 730 4097 16808 47450 78126 65537 19684 1025 1

A286880 as a square array

`1`	`2`	`2`	`2`	`2`	`4`	`2`	`2`	`2`	`4`	`2`	`4`
`1`	`3`	`4`	`5`	`6`	`12`	`8`	`9`	`10`	`18`	`12`
`1`	`5`	`10`	`17`	`26`	`50`	`50`	`65`	`82`	`130`
`1`	`9`	`28`	`65`	`126`	`252`	`344`	`513`	`730`
`1`	`17`	`82`	`257`	`626`	`1394`	`2402`	`4097`
`1`	`33`	`244`	`1025`	`3126`	`8052`	`16808`
`1`	`65`	`730`	`4097`	`15626`	`47450`
`1`	`129`	`2188`	`16385`	`78126`
`1`	`257`	`6562`	`65537`
`1`	`513`	`19684`
`1`	`1025`
`1`

A286880 as an upper right triangle

`1`	`2`	`2`	`2`	`2`	`4`	`2`	`2`	`2`	`4`	`2`	`4`
	`1`	`3`	`4`	`5`	`6`	`12`	`8`	`9`	`10`	`18`	`12`
		`1`	`5`	`10`	`17`	`26`	`50`	`50`	`65`	`82`	`130`
			`1`	`9`	`28`	`65`	`126`	`252`	`344`	`513`	`730`
				`1`	`17`	`82`	`257`	`626`	`1394`	`2402`	`4097`
					`1`	`33`	`244`	`1025`	`3126`	`8052`	`16808`
						`1`	`65`	`730`	`4097`	`15626`	`47450`
							`1`	`129`	`2188`	`16385`	`78126`
								`1`	`257`	`6562`	`65537`
									`1`	`513`	`19684`
										`1`	`1025`
											`1`

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Last modified April 25 11:16 EDT 2024. Contains 371967 sequences. (Running on oeis4.)