The 5x + 1 sequence beginning at 7.

Terms

a(0) =7a(1) =36a(2) =18a(3) =9a(4) =46a(5) =23a(6) =116a(7) =58a(8) =29a(9) =146a(10) =73a(11) =366a(12) =183a(13) =916a(14) =458a(15) =229a(16) =1146a(17) =573a(18) =2866a(19) =1433a(20) =7166a(21) =3583a(22) =17916a(23) =8958a(24) =4479a(25) =22396a(26) =11198a(27) =5599a(28) =27996a(29) =13998