Coordination sequence for net formed by holes in D_4 lattice.

Terms

a(0) =1a(1) =16a(2) =104a(3) =344a(4) =792a(5) =1528a(6) =2632a(7) =4152a(8) =6200a(9) =8792a(10) =12072a(11) =16024a(12) =20824a(13) =26424a(14) =33032a(15) =40568a(16) =49272a(17) =59032a(18) =70120a(19) =82392a(20) =96152a(21) =111224a(22) =127944a(23) =146104a(24) =166072a(25) =187608a(26) =211112a(27) =236312a(28) =263640a(29) =292792