Number of square twice-partitions of n.

Terms

a(0) =1a(1) =1a(2) =1a(3) =1a(4) =2a(5) =2a(6) =4a(7) =5a(8) =10a(9) =12a(10) =19a(11) =24a(12) =39a(13) =49a(14) =73a(15) =104a(16) =151a(17) =212a(18) =317a(19) =443a(20) =638a(21) =936a(22) =1296a(23) =1841a(24) =2635a(25) =3641a(26) =5069a(27) =7176a(28) =9884a(29) =13614