Members of a pair (m,k) such that sigma(m) = sigma(k) = sigma(m+k), m < k where sigma = A000203.

Terms

a(0) =1288a(1) =1485a(2) =5775a(3) =6128a(4) =8008a(5) =11685a(6) =16744a(7) =19305a(8) =21896a(9) =25245a(10) =24472a(11) =28215a(12) =26488a(13) =35505a(14) =32620a(15) =45441a(16) =37352a(17) =43065a(18) =39928a(19) =46035a(20) =47656a(21) =54945a(22) =50260a(23) =65637a(24) =52808a(25) =60885a(26) =55384a(27) =63855a(28) =62744a(29) =75495