Row sums of the accumulated Stirling2 triangle A359107.

Terms

a(0) =1a(1) =1a(2) =3a(3) =10a(4) =38a(5) =161a(6) =747a(7) =3753a(8) =20253a(9) =116642a(10) =713130a(11) =4607813a(12) =31345921a(13) =223767233a(14) =1671430607a(15) =13030153118a(16) =105777688842a(17) =892355720117