Number of 4-cycles in the n-cycle complement and (n+1)-wheel complement graph.

Terms

a(0) =0a(1) =0a(2) =0a(3) =3a(4) =14a(5) =42a(6) =99a(7) =200a(8) =363a(9) =609a(10) =962a(11) =1449a(12) =2100a(13) =2948a(14) =4029a(15) =5382a(16) =7049a(17) =9075a(18) =11508a(19) =14399a(20) =17802a(21) =21774a(22) =26375a(23) =31668a(24) =37719a(25) =44597a(26) =52374a(27) =61125a(28) =70928a(29) =81864