Number of asymmetric mobiles (cycle rooted trees) with n nodes and 2-colored internal (non-leaf) nodes.

A108532

Number of asymmetric mobiles (cycle rooted trees) with n nodes and 2-colored internal (non-leaf) nodes.

Terms

    a(0) =1a(1) =2a(2) =4a(3) =12a(4) =38a(5) =136a(6) =490a(7) =1852a(8) =7108a(9) =27880a(10) =110892a(11) =447060a(12) =1821252a(13) =7489732a(14) =31045350a(15) =129587996a(16) =544228664a(17) =2298008824a(18) =9750218012a(19) =41548438040a(20) =177740526076a(21) =763046178960

External references