Image of n under the 3^x+1 map, which is a variation of the 3x+1 (Collatz) map.

Terms

a(0) =4a(1) =1a(2) =28a(3) =2a(4) =244a(5) =2a(6) =2188a(7) =3a(8) =19684a(9) =3a(10) =177148a(11) =3a(12) =1594324a(13) =3a(14) =14348908a(15) =4a(16) =129140164a(17) =4a(18) =1162261468a(19) =4a(20) =10460353204a(21) =4a(22) =94143178828a(23) =4a(24) =847288609444a(25) =4a(27) =4a(29) =4a(31) =5a(33) =5