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A167550
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The a(n,n+1) diagonal of the ED1 array A167546
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1
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1, 7, 62, 762, 12264, 245640, 5897520, 165145680, 5284782720, 190253266560, 7610141548800, 334846347897600, 16072626136089600, 835776577757721600, 46803488615967283200, 2808209320881060096000, 179725396599156215808000
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OFFSET
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1,2
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LINKS
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FORMULA
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a(n,n+1) = 4*(n-1)*a(n-1,n)+3*(n-1)! with a(1,2) = 1.
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CROSSREFS
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Equals the a(n, n+1) diagonal of the ED1 array A167546.
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KEYWORD
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easy,nonn
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AUTHOR
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STATUS
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approved
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