Matrix product of unsigned Stirling1-triangle |A008275(n,k)| and Stirling1-triangle A008275(n,k).

Terms

a(0) =1a(1) =0a(2) =1a(3) =1a(4) =0a(5) =1a(6) =1a(7) =4a(8) =0a(9) =1a(10) =8a(11) =5a(12) =10a(13) =0a(14) =1a(15) =26a(16) =58a(17) =15a(18) =20a(19) =0a(20) =1a(21) =194a(22) =217a(23) =238a(24) =35a(25) =35a(26) =0a(27) =1a(28) =1142a(29) =2035