A086813 a(1)=1 then a(n)= (1/2) *(5*a(n-1)+1) if a(n-1) is odd, a(n)=3/2*a(n-1) otherwise.

1, 3, 8, 12, 18, 27, 68, 102, 153, 383, 958, 1437, 3593, 8983, 22458, 33687, 84218, 126327, 315818, 473727, 1184318, 1776477, 4441193, 11102983, 27757458, 41636187, 104090468, 156135702, 234203553, 585508883, 1463772208, 2195658312