Smith (or joke) numbers: composite numbers k such that sum of digits of k = sum of digits of prime factors of k (counted with multiplicity).

A006753

Smith (or joke) numbers: composite numbers k such that sum of digits of k = sum of digits of prime factors of k (counted with multiplicity).

Terms

    a(0) =4a(1) =22a(2) =27a(3) =58a(4) =85a(5) =94a(6) =121a(7) =166a(8) =202a(9) =265a(10) =274a(11) =319a(12) =346a(13) =355a(14) =378a(15) =382a(16) =391a(17) =438a(18) =454a(19) =483a(20) =517a(21) =526a(22) =535a(23) =562a(24) =576a(25) =588a(26) =627a(27) =634a(28) =636a(29) =645

External references