A048505 - OEIS

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A048505 as a triangular array

1

2 1

7 5 1

25 18 10 1

81 56 35 17 1

241 160 101 58 26 1

673 432 269 160 87 37 1

1793 1120 685 408 233 122 50 1

4609 2816 1693 1000 577 320 163 65 1

11521 6912 4093 2392 1377 776 421

A048505 as a square array

`1`	`2`	`7`	`25`	`81`	`241`	`673`	`1793`	`4609`	`11521`
`1`	`5`	`18`	`56`	`160`	`432`	`1120`	`2816`	`6912`
`1`	`10`	`35`	`101`	`269`	`685`	`1693`	`4093`
`1`	`17`	`58`	`160`	`408`	`1000`	`2392`
`1`	`26`	`87`	`233`	`577`	`1377`
`1`	`37`	`122`	`320`	`776`
`1`	`50`	`163`	`421`
`1`	`65`
`1`

A048505 as an upper right triangle

`1`	`2`	`7`	`25`	`81`	`241`	`673`	`1793`	`4609`	`11521`
	`1`	`5`	`18`	`56`	`160`	`432`	`1120`	`2816`	`6912`
		`1`	`10`	`35`	`101`	`269`	`685`	`1693`	`4093`
			`1`	`17`	`58`	`160`	`408`	`1000`	`2392`
				`1`	`26`	`87`	`233`	`577`	`1377`
					`1`	`37`	`122`	`320`	`776`
						`1`	`50`	`163`	`421`
							`1`	`65`
								`1`

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Last modified September 2 18:29 EDT 2024. Contains 375616 sequences. (Running on oeis4.)