A258223 - OEIS

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A258223 as a triangular array

1

1 1

2 8 3

5 69 77 15

14 692 1749 890 105

42 8120 41998 41909 12039 945

132 110278 1114808 1944225 1018865 186594 10395

429 1707965 33058519 94833341 80595226 25798856 3260067 135135

1430 29750636 1093994697 4979407614 6439957299 3201618970 687652446 63390060 2027025

A258223 as a square array

`1`	`1`	`2`	`5`	`14`	`42`	`132`	`429`	`1430`
`1`	`8`	`69`	`692`	`8120`	`110278`	`1707965`	`29750636`
`3`	`77`	`1749`	`41998`	`1114808`	`33058519`	`1093994697`
`15`	`890`	`41909`	`1944225`	`94833341`	`4979407614`
`105`	`12039`	`1018865`	`80595226`	`6439957299`
`945`	`186594`	`25798856`	`3201618970`
`10395`	`3260067`	`687652446`
`135135`	`63390060`
`2027025`

A258223 as an upper right triangle

`1`	`1`	`2`	`5`	`14`	`42`	`132`	`429`	`1430`
	`1`	`8`	`69`	`692`	`8120`	`110278`	`1707965`	`29750636`
		`3`	`77`	`1749`	`41998`	`1114808`	`33058519`	`1093994697`
			`15`	`890`	`41909`	`1944225`	`94833341`	`4979407614`
				`105`	`12039`	`1018865`	`80595226`	`6439957299`
					`945`	`186594`	`25798856`	`3201618970`
						`10395`	`3260067`	`687652446`
							`135135`	`63390060`
								`2027025`

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Last modified May 1 02:22 EDT 2024. Contains 372143 sequences. (Running on oeis4.)