Sums of least knight's moves from (0,0) to points in the square lattice [-n,n]x[-n,n].

Terms

a(0) =0a(1) =20a(2) =52a(3) =112a(4) =200a(5) =340a(6) =524a(7) =784a(8) =1096a(9) =1508a(10) =1988a(11) =2584a(12) =3264a(13) =4084a(14) =4996a(15) =6072a(16) =7256a(17) =8620a(18) =10108a(19) =11800a(20) =13624a(21) =15676a(22) =17876a(23) =20320a(24) =22928a(25) =25804a(26) =28852a(27) =32192a(28) =35720a(29) =39556