Numbers k such that k and k+1 are both terms of A365883.

Terms

a(0) =27a(1) =188a(2) =459a(3) =620a(4) =675a(5) =836a(6) =1107a(7) =1268a(8) =1323a(9) =1484a(10) =1755a(11) =1916a(12) =1971a(13) =2132a(14) =2403a(15) =2564a(16) =2619a(17) =2780a(18) =3051a(19) =3124a(20) =3212a(21) =3267a(22) =3428a(23) =3699a(24) =3860a(25) =3915a(26) =4076a(27) =4347a(28) =4508a(29) =4563