Number of subsets of {1..n} such that it is possible to choose a different binary index of each element.

A370636

Number of subsets of {1..n} such that it is possible to choose a different binary index of each element.

Terms

    a(0) =1a(1) =2a(2) =4a(3) =7a(4) =14a(5) =24a(6) =39a(7) =61a(8) =122a(9) =203a(10) =315a(11) =469a(12) =676a(13) =952a(14) =1307a(15) =1771a(16) =3542a(17) =5708a(18) =8432a(19) =11877a(20) =16123a(21) =21415a(22) =27835a(23) =35757a(24) =45343a(25) =57010a(26) =70778a(27) =87384a(28) =106479a(29) =129304

External references