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a(n)=6n+A054905[n].
0

%I #4 Oct 15 2013 22:32:01

%S 110,77,38,104,74,161,87,111,94,159,122,142,374,209,178,206,206,253,

%T 326,302,206,302,471,249,519,341,346,303,354,481,542,377,2057,533,386,

%U 411,5138,662,846,527,386,437,1034,519,794,689,626,493,566,629,873,527,638

%N a(n)=6n+A054905[n].

%F Composite x solutions to sigma[x-6n]=sigma[x]-6n.

%e To terms of A054904, where sigma[x+6n]=sigma[x]+6n replacing x+6n=y,x=y-6n, we get sigma[y]-6n=sigma[y-6n].

%e For several analogous sequences such corresponding "mirror-solutions" can be easily constructed. See e.g. A015913-A015918; A050507, A054799, A054903-A054906; A054982-A054987; A059118; A055009, A055458, A063500 etc.

%Y Cf. A054904, A084293.

%K nonn

%O 1,1

%A _Labos Elemer_, May 26 2003