Number of sum-full subsets of {1,...,n}; subsets A such that there is a solution to x+y=z for x,y,z in A.

A093971

Number of sum-full subsets of {1,...,n}; subsets A such that there is a solution to x+y=z for x,y,z in A.

Terms

    a(0) =0a(1) =1a(2) =2a(3) =7a(4) =16a(5) =40a(6) =86a(7) =195a(8) =404a(9) =873a(10) =1795a(11) =3727a(12) =7585a(13) =15537a(14) =31368a(15) =63582a(16) =127933a(17) =257746a(18) =517312a(19) =1038993a(20) =2081696a(21) =4173322a(22) =8355792a(23) =16731799a(24) =33484323a(25) =67014365a(26) =134069494a(27) =268234688a(28) =536562699a(29) =1073326281

External references