Wiener index of the n X n black bishop graph.

Terms

a(0) =0a(1) =1a(2) =14a(3) =42a(4) =124a(5) =251a(6) =506a(7) =852a(8) =1432a(9) =2165a(10) =3270a(11) =4606a(12) =6484a(13) =8687a(14) =11634a(15) =15016a(16) =19376a(17) =24297a(18) =30462a(19) =37330a(20) =45740a(21) =55011a(22) =66154a(23) =78332a(24) =92744a(25) =108381a(26) =126646a(27) =146342a(28) =169092a(29) =193495