Numbers of the form i*7^j-1 (i=1..6, j >= 0).

Terms

a(0) =0a(1) =1a(2) =2a(3) =3a(4) =4a(5) =5a(6) =6a(7) =13a(8) =20a(9) =27a(10) =34a(11) =41a(12) =48a(13) =97a(14) =146a(15) =195a(16) =244a(17) =293a(18) =342a(19) =685a(20) =1028a(21) =1371a(22) =1714a(23) =2057a(24) =2400a(25) =4801a(26) =7202a(27) =9603a(28) =12004a(29) =14405