Harmonic mean of digits is 2.

Terms

a(0) =2a(1) =22a(2) =136a(3) =144a(4) =163a(5) =222a(6) =316a(7) =361a(8) =414a(9) =441a(10) =613a(11) =631a(12) =1236a(13) =1244a(14) =1263a(15) =1326a(16) =1333a(17) =1362a(18) =1424a(19) =1442a(20) =1623a(21) =1632a(22) =2136a(23) =2144a(24) =2163a(25) =2222a(26) =2316a(27) =2361a(28) =2414a(29) =2441