Number of subsets of {1..n} containing n such that it is possible to choose a different prime factor of each element (choosable).
A370586
Number of subsets of {1..n} containing n such that it is possible to choose a different prime factor of each element (choosable).
Terms
- a(0) =0a(1) =0a(2) =1a(3) =2a(4) =2a(5) =6a(6) =8a(7) =20a(8) =12a(9) =20a(10) =44a(11) =116a(12) =88a(13) =320a(14) =380a(15) =508a(16) =264a(17) =1792a(18) =968a(19) =4552a(20) =3136a(21) =5600a(22) =10056a(23) =27896a(24) =11792a(25) =16384a(26) =46688a(27) =19584a(28) =48288a(29) =198528
External references
- oeis: A370586