Composite numbers n equal to the sum of prime factors, counted with multiplicity, of the numbers in the interval [n-k,n+k], for some k.

A257367

Composite numbers n equal to the sum of prime factors, counted with multiplicity, of the numbers in the interval [n-k,n+k], for some k.

Terms

    a(0) =4a(1) =75a(2) =186a(3) =531a(4) =627a(5) =5216a(6) =22843a(7) =148050a(8) =1061385a(9) =1490407a(10) =1562485a(11) =9034704a(12) =10422738a(13) =31920786a(14) =76343543a(15) =78824242a(16) =105791155a(17) =111873121a(18) =131515163a(19) =549038887a(20) =1318856915a(21) =1394579379a(22) =1630428366a(23) =1639063828a(24) =3710476544a(25) =3996221763a(26) =4524478925a(27) =6172721935

External references