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A067303
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Even-indexed members of A067302.
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2
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1, 18, 1752, 282304, 54547200, 11478167040, 2533556365312, 576271774875648, 133776598692003840, 31513560479297044480, 7505638177922587557888, 1802924878727702252617728, 436026430783762289982963712
(list;
graph;
refs;
listen;
history;
text;
internal format)
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OFFSET
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0,2
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LINKS
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FORMULA
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G.f.: (x*(d/dx)A(x) + A(x)) with A(x) g.f. of A067320.
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CROSSREFS
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KEYWORD
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nonn,easy
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AUTHOR
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STATUS
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approved
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