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1, 4, 32, 512, 32768, 4194304, 1073741824, 1099511627776, 2251799813685248, 9223372036854775808, 151115727451828646838272, 4951760157141521099596496896, 324518553658426726783156020576256, 85070591730234615865843651857942052864
(list;
graph;
refs;
listen;
history;
text;
internal format)
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OFFSET
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0,2
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COMMENTS
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LINKS
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FORMULA
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a(n)=2^binomial(n+1,2)*2^floor((n+1)(n+2)/6).
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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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