Number of squares of all sizes in 3*n*(n+1)/2-ominoes in form of three-quarters of Aztec diamonds.

Terms

a(0) =3a(1) =11a(2) =25a(3) =49a(4) =84a(5) =132a(6) =196a(7) =278a(8) =379a(9) =503a(10) =651a(11) =825a(12) =1028a(13) =1262a(14) =1528a(15) =1830a(16) =2169a(17) =2547a(18) =2967a(19) =3431a(20) =3940a(21) =4498a(22) =5106a(23) =5766a(24) =6481a(25) =7253a(26) =8083a(27) =8975a(28) =9930a(29) =10950