Square array, read by antidiagonals, where row n equals the crystal ball sequence for D_n lattice.

Terms

a(0) =1a(1) =1a(2) =1a(3) =1a(4) =3a(5) =1a(6) =1a(7) =5a(8) =5a(9) =1a(10) =1a(11) =13a(12) =13a(13) =7a(14) =1a(15) =1a(16) =25a(17) =55a(18) =25a(19) =9a(20) =1a(21) =1a(22) =41a(23) =169a(24) =147a(25) =41a(26) =11a(27) =1a(28) =1a(29) =61