Number of subsets of {1..n-1} that can be linearly combined using nonnegative coefficients to obtain n.

A365542

Number of subsets of {1..n-1} that can be linearly combined using nonnegative coefficients to obtain n.

Terms

    a(0) =0a(1) =1a(2) =2a(3) =6a(4) =10a(5) =28a(6) =48a(7) =116a(8) =224a(9) =480a(10) =920a(11) =2000a(12) =3840a(13) =7984a(14) =15936a(15) =32320a(16) =63968a(17) =130176a(18) =258304a(19) =521920a(20) =1041664a(21) =2089472a(22) =4171392a(23) =8377856a(24) =16726528a(25) =33509632a(26) =67004416a(27) =134129664a(28) =268111360a(29) =536705024

External references