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1, 31, 2521, 97921, 4974481, 226965751, 10783342081, 504420084871, 23735900452321, 1114384154071681, 52364857850613001, 2459808940392975631, 115562692701892638721, 5428914300540041959471, 255044709450472227347881
(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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It appears that from a(2)=2521 onward, this sequence is the same as A157696.
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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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