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A067825
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Even values of n such that sigma(n + 1) > sigma(n).
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4
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2, 62, 74, 134, 146, 194, 254, 314, 398, 404, 458, 482, 494, 524, 554, 566, 614, 626, 662, 674, 692, 734, 758, 764, 794, 818, 854, 914, 944, 974, 998, 1034, 1094, 1124, 1154, 1214, 1238, 1286, 1322, 1394, 1454, 1514, 1538, 1574, 1646, 1658, 1682, 1754
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OFFSET
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1,1
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COMMENTS
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Most terms are == 2 (mod 6), first term == 4 (mod 6) is a(365) = 13474. - Zak Seidov, Apr 18 2013
First term == 0 (mod 6) may be 296527606374. - Jianing Song, Apr 01 2018
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LINKS
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MATHEMATICA
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Select[Range[2, 2000, 2], DivisorSigma[1, #] < DivisorSigma[1, # + 1] &] (* Zak Seidov, Apr 18 2013 *)
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PROG
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(GAP) Filtered([2, 4..2000], n->Sigma(n+1)>Sigma(n)); # Muniru A Asiru, Apr 03 2018
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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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