1,1
a(1)=6 because 18-12=6; a(4)=6 because 30-24=6
#[[2]]-#[[1]]&/@Partition[Select[Range[300], DivisorSigma[1, # ]>2#&], 2, 1] - Harvey P. Dale (hpd1(AT)nyu.edu), Dec 02 2006
Cf. A005101.
Sequence in context: A010493 A175286 A061496 * A202244 A020831 A156590
Adjacent sequences: A125112 A125113 A125114 * A125116 A125117 A125118
easy,nonn
Jason G. Wurtzel (j_seq(AT)wurtzel.com), Nov 21 2006