A258427 - OEIS

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A258427 as a triangular array

1

12 18

112 420 336

956 6816 12936 7200

7830 95579 324540 414450 178200

62744 1244466 6755720 14886300 14355000 5045040

496518 15537456 127063596 430572780 699460740 542341800 161441280

A258427 as a square array

`1`	`12`	`112`	`956`	`7830`	`62744`	`496518`
`18`	`420`	`6816`	`95579`	`1244466`	`15537456`
`336`	`12936`	`324540`	`6755720`	`127063596`
`7200`	`414450`	`14886300`	`430572780`
`178200`	`14355000`	`699460740`
`5045040`	`542341800`
`161441280`

A258427 as an upper right triangle

`1`	`12`	`112`	`956`	`7830`	`62744`	`496518`
	`18`	`420`	`6816`	`95579`	`1244466`	`15537456`
		`336`	`12936`	`324540`	`6755720`	`127063596`
			`7200`	`414450`	`14886300`	`430572780`
				`178200`	`14355000`	`699460740`
					`5045040`	`542341800`
						`161441280`

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Last modified April 19 19:02 EDT 2024. Contains 371798 sequences. (Running on oeis4.)