Gaps of 6 in sequence A038593 (upper terms).

Terms

a(0) =1267a(1) =7657a(2) =7784a(3) =7936a(4) =12103a(5) =20923a(6) =21931a(7) =32767a(8) =42659a(9) =47915a(10) =48013a(11) =52675a(12) =69992a(13) =85183a(14) =90782a(15) =117628a(16) =124657a(17) =154726a(18) =194389a(19) =249704a(20) =249983a(21) =251881a(22) =261421a(23) =291941a(24) =310093a(25) =325717a(26) =399392a(27) =448153a(28) =549835a(29) =579689