a(n) = 2n + A054905(n).

Terms

a(0) =436a(1) =305635361a(2) =110a(3) =35a(4) =195566a(5) =77a(6) =26a(7) =55a(8) =38a(9) =76a(10) =938a(11) =104a(12) =212308a(13) =85a(14) =74a(15) =106677a(16) =86a(17) =161