Gaps of 4 in sequence A038593 (upper terms).

Terms

a(0) =335a(1) =992a(2) =14915a(3) =31232a(4) =37973a(5) =84881a(6) =102125a(7) =318611a(8) =1058528a(9) =1403597a(10) =3760553a(11) =4796885a(12) =4912661a(13) =5717504a(14) =5735000a(15) =6804128a(16) =7188932a(17) =9903017a(18) =10133129a(19) =14040875a(20) =16930559a(21) =22656881a(22) =32878235a(23) =35956352a(24) =41917952a(25) =44653691a(26) =46692371a(27) =47107226a(28) =47222201a(29) =53033465