Number of edges in minimal broadcast graph with n nodes.

Terms

a(0) =0a(1) =1a(2) =2a(3) =4a(4) =5a(5) =6a(6) =8a(7) =12a(8) =10a(9) =12a(10) =13a(11) =15a(12) =18a(13) =21a(14) =24a(15) =32a(16) =22a(17) =23a(18) =25a(19) =26a(20) =28a(21) =31