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A171879
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a(n) = a(n-1) + a(n-2)*a(n-3) + a(n-4)*a(n-5)^a(n-6)
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0
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0, 0, 1, 1, 1, 1, 3, 5, 9, 25, 73, 313, 3263, 1502337, 278472902914281, 11984387434132924341157279996736444304839056033321
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OFFSET
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0,7
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COMMENTS
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First 6 terms are {0,0,1,1,1,1}; thereafter apply the recurrence. Note that 0^0=1.
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LINKS
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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STATUS
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approved
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