A049174 Revert transform of 2*(1 + x + x^2 + x^5)-1/(1-x).

1, 1, 3, 9, 31, 111, 415, 1589, 6209, 24617, 98755, 399853, 1631223, 6695623, 27622559, 114432337, 475698713, 1983128001, 8286708835, 34692334537, 145457648071, 610578202095, 2565147448607, 10782647145589, 45338223018217