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A180650
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Irregular triangle in which row n consists of the smaller of pairs of amicable numbers of the form 2^n pq, with p and q odd primes.
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3
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2620, 5020, 10744, 66928, 171856, 176272, 437456, 503056, 1392368, 2802416, 2082464, 15002464, 17908064, 7677248, 56055872, 1237888448, 1750776704, 16873473664, 749380864, 902335744, 4377991936, 74006870272, 243815958784
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OFFSET
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2,1
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COMMENTS
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The length of row n is A180335(n). The first number in row n is A180330(n).
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LINKS
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CROSSREFS
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KEYWORD
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hard,tabf,nonn
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AUTHOR
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STATUS
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approved
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