Integers which cannot be written as k+tau(k) for some k.

Terms

a(0) =1a(1) =3a(2) =6a(3) =8a(4) =11a(5) =16a(6) =17a(7) =20a(8) =22a(9) =23a(10) =27a(11) =29a(12) =35a(13) =36a(14) =40a(15) =41a(16) =44a(17) =46a(18) =47a(19) =53a(20) =54a(21) =57a(22) =60a(23) =65a(24) =67a(25) =68a(26) =70a(27) =76a(28) =77a(29) =79