Triangle read by rows: T(n,k) is the number of simple connected graphs on n nodes with k center nodes.

A294525

Triangle read by rows: T(n,k) is the number of simple connected graphs on n nodes with k center nodes.

Terms

    a(0) =1a(1) =0a(2) =1a(3) =1a(4) =0a(5) =1a(6) =2a(7) =2a(8) =0a(9) =2a(10) =8a(11) =4a(12) =4a(13) =0a(14) =5a(15) =29a(16) =19a(17) =18a(18) =18a(19) =0a(20) =28a(21) =180a(22) =84a(23) =119a(24) =118a(25) =129a(26) =0a(27) =223a(28) =1463a(29) =821

External references