A223523 - OEIS

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A223523 as a triangular array

1

3 2

15 20 4

105 210 84 8

945 2520 1512 288 16

10395 34650 27720 7920 880 32

135135 540540 540540 205920 34320 2496 64

2027025 9459450 11351340 5405400 1201200 131040 6720 128

A223523 as a square array

`1`	`3`	`15`	`105`	`945`	`10395`	`135135`	`2027025`
`2`	`20`	`210`	`2520`	`34650`	`540540`	`9459450`
`4`	`84`	`1512`	`27720`	`540540`	`11351340`
`8`	`288`	`7920`	`205920`	`5405400`
`16`	`880`	`34320`	`1201200`
`32`	`2496`	`131040`
`64`	`6720`
`128`

A223523 as an upper right triangle

`1`	`3`	`15`	`105`	`945`	`10395`	`135135`	`2027025`
	`2`	`20`	`210`	`2520`	`34650`	`540540`	`9459450`
		`4`	`84`	`1512`	`27720`	`540540`	`11351340`
			`8`	`288`	`7920`	`205920`	`5405400`
				`16`	`880`	`34320`	`1201200`
					`32`	`2496`	`131040`
						`64`	`6720`
							`128`

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Last modified June 11 19:21 EDT 2024. Contains 373317 sequences. (Running on oeis4.)