Row sums of triangle A166455.

Terms

a(0) =1a(1) =2a(2) =6a(3) =12a(4) =30a(5) =60a(6) =124a(7) =248a(8) =510a(9) =1020a(10) =2044a(11) =4088a(12) =8188a(13) =16376a(14) =32760a(15) =65520a(16) =131070a(17) =262140a(18) =524284a(19) =1048568a(20) =2097148a(21) =4194296a(22) =8388600a(23) =16777200a(24) =33554428a(25) =67108856a(26) =134217720a(27) =268435440a(28) =536870904a(29) =1073741808