Row sums of triangle A049326.

Terms

a(0) =1a(1) =11a(2) =71a(3) =356a(4) =1866a(5) =10476a(6) =57186a(7) =308621a(8) =1682031a(9) =9170291a(10) =49879401a(11) =271409736a(12) =1477549796a(13) =8042157456a(14) =43769353716a(15) =238229560201