Row sums of triangle A049325.

Terms

a(0) =1a(1) =7a(2) =29a(3) =103a(4) =405a(5) =1599a(6) =6141a(7) =23863a(8) =92773a(9) =359791a(10) =1396493a(11) =5421415a(12) =21041397a(13) =81670431a(14) =317005341a(15) =1230432919a(16) =4775854213a(17) =18537264079a(18) =71951401517a(19) =279275580103