a(n) = T(n,n), T given by A026536. Also a(n) = number of integer strings s(0), ..., s(n), counted by T, such that s(n)=0.

A026537

a(n) = T(n,n), T given by A026536. Also a(n) = number of integer strings s(0), ..., s(n), counted by T, such that s(n)=0.

Terms

    a(0) =1a(1) =0a(2) =2a(3) =2a(4) =8a(5) =12a(6) =38a(7) =66a(8) =196a(9) =360a(10) =1052a(11) =1980a(12) =5774a(13) =11004a(14) =32146a(15) =61726a(16) =180772a(17) =348912a(18) =1024256a(19) =1984608a(20) =5837908a(21) =11346280a(22) =33433996a(23) =65143716a(24) =192239854a(25) =375351288a(26) =1109049320a(27) =2169299288a(28) =6416509142a(29) =12569973108

External references