Numbers k >= 3 such that 1/d(k - 2) + 1/d(k - 1) + 1/d(k) is an integer, d(i) = A000005(i).

Terms

a(0) =3a(1) =8a(2) =15a(3) =23a(4) =39a(5) =59a(6) =159a(7) =179a(8) =383a(9) =503a(10) =543a(11) =719a(12) =879a(13) =1203a(14) =1319a(15) =1383a(16) =1439a(17) =1623a(18) =1823a(19) =2019a(20) =2559a(21) =2579a(22) =2859a(23) =2903a(24) =3063a(25) =3119a(26) =3779a(27) =4283a(28) =4359a(29) =4443