Number of maximal sum-free and product-free subsets of {1..n}.

Terms

a(0) =1a(1) =1a(2) =1a(3) =1a(4) =2a(5) =3a(6) =4a(7) =6a(8) =8a(9) =9a(10) =15a(11) =21a(12) =26a(13) =38a(14) =51a(15) =69a(16) =89a(17) =119a(18) =149a(19) =197a(20) =261a(21) =356a(22) =447a(23) =601a(24) =781a(25) =1003a(26) =1293a(27) =1714a(28) =2228a(29) =2931