Row sums of A257241, Stifel's version of the arithmetical triangle.

Terms

a(0) =1a(1) =2a(2) =6a(3) =10a(4) =25a(5) =41a(6) =98a(7) =162a(8) =381a(9) =637a(10) =1485a(11) =2509a(12) =5811a(13) =9907a(14) =22818a(15) =39202a(16) =89845a(17) =155381a(18) =354521a(19) =616665a(20) =1401291a(21) =2449867a(22) =5546381a(23) =9740685a(24) =21977515a(25) =38754731a(26) =87167163a(27) =154276027a(28) =345994215a(29) =614429671