Edge count of the n X n white bishop graph.

Terms

a(0) =0a(1) =1a(2) =4a(3) =14a(4) =28a(5) =55a(6) =88a(7) =140a(8) =200a(9) =285a(10) =380a(11) =506a(12) =644a(13) =819a(14) =1008a(15) =1240a(16) =1488a(17) =1785a(18) =2100a(19) =2470a(20) =2860a(21) =3311a(22) =3784a(23) =4324a(24) =4888a(25) =5525a(26) =6188a(27) =6930a(28) =7700a(29) =8555