Number of 6-cycles in the n-Lucas cube graph.

Terms

a(0) =0a(1) =0a(2) =0a(3) =0a(4) =5a(5) =44a(6) =147a(7) =464a(8) =1236a(9) =3100a(10) =7293a(11) =16472a(12) =35919a(13) =76216a(14) =158040a(15) =321472a(16) =643229a(17) =1268868a(18) =2472147a(19) =4764120a(20) =9092300a(21) =17202636a(22) =32294277a(23) =60199088a(24) =111498175a(25) =205306192a(26) =376014960a(27) =685273120a(28) =1243205205a(29) =2245893340