Number of unordered pairs of partitions of n with no common parts.

Terms

a(0) =1a(1) =0a(2) =1a(3) =2a(4) =6a(5) =8a(6) =24a(7) =30a(8) =74a(9) =110a(10) =219a(11) =309a(12) =651a(13) =870a(14) =1608a(15) =2394a(16) =4085a(17) =5756a(18) =9931a(19) =13785a(20) =22724a(21) =32300a(22) =50404a(23) =70862a(24) =111540a(25) =153756a(26) =232868a(27) =326259a(28) =484090a(29) =667015