a(n) = Sum_{k=0..floor((n-1)/3)} |Stirling1(n,3*k+1)|.

A357829

a(n) = Sum_{k=0..floor((n-1)/3)} |Stirling1(n,3*k+1)|.

Terms

    a(0) =0a(1) =1a(2) =1a(3) =2a(4) =7a(5) =34a(6) =205a(7) =1456a(8) =11837a(9) =108150a(10) =1096011a(11) =12196128a(12) =147814359a(13) =1938062490a(14) =27333191613a(15) =412614191808

External references