A231227 - OEIS

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A231227 as a triangular array

1

2 2

3 4 3

6 8 8 6

11 17 21 17 11

22 45 54 54 45 22

43 103 185 182 185 103 43

86 264 552 812 812 552 264 86

171 676 1799 2962 4298 2962 1799 676 171

342 1724 5900 12179 19935 19935 12179 5900 1724 342

683 4501

A231227 as a square array

`1`	`2`	`3`	`6`	`11`	`22`	`43`	`86`	`171`	`342`	`683`
`2`	`4`	`8`	`17`	`45`	`103`	`264`	`676`	`1724`	`4501`
`3`	`8`	`21`	`54`	`185`	`552`	`1799`	`5900`
`6`	`17`	`54`	`182`	`812`	`2962`	`12179`
`11`	`45`	`185`	`812`	`4298`	`19935`
`22`	`103`	`552`	`2962`	`19935`
`43`	`264`	`1799`	`12179`
`86`	`676`	`5900`
`171`	`1724`
`342`

A231227 as an upper right triangle

`1`	`2`	`3`	`6`	`11`	`22`	`43`	`86`	`171`	`342`	`683`
	`2`	`4`	`8`	`17`	`45`	`103`	`264`	`676`	`1724`	`4501`
		`3`	`8`	`21`	`54`	`185`	`552`	`1799`	`5900`
			`6`	`17`	`54`	`182`	`812`	`2962`	`12179`
				`11`	`45`	`185`	`812`	`4298`	`19935`
					`22`	`103`	`552`	`2962`	`19935`
						`43`	`264`	`1799`	`12179`
							`86`	`676`	`5900`
								`171`	`1724`
									`342`

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Last modified April 17 23:23 EDT 2024. Contains 371767 sequences. (Running on oeis4.)