Numbers of the form (3^j + 7^k)/2, for j and k >= 0.

Terms

a(0) =1a(1) =2a(2) =4a(3) =5a(4) =8a(5) =14a(6) =17a(7) =25a(8) =26a(9) =29a(10) =38a(11) =41a(12) =44a(13) =65a(14) =122a(15) =125a(16) =146a(17) =172a(18) =173a(19) =176a(20) =185a(21) =212a(22) =293a(23) =365a(24) =368a(25) =389a(26) =536a(27) =1094a(28) =1097a(29) =1118