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A028380
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a_n = - sum_{i=1..n-1} C(i+1, n-i) (-1)^(n-i) a_i.
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0
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0, 28, 148, 621, 2420, 9152, 34164, 126854, 470288, 1744200, 6478088, 24107105, 89908380
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OFFSET
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0,2
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COMMENTS
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The values do not reflect the definition. They seem to be defined by (n-1)*(9*n+10)*(n+5) * a(n) = 2*n*(9*n+19)*(2*n+3) *a(n-1), n>1. - R. J. Mathar, Dec 15 2015
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LINKS
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CROSSREFS
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KEYWORD
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nonn,obsc
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AUTHOR
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Grisha Berkolaiko (grisha(AT)ORY.ph.biu.ac.il)
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STATUS
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approved
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