Number of subsets of {1,2,....,n} with an arithmetic mean that is an integer and also a divisor of n.
A114976
Number of subsets of {1,2,....,n} with an arithmetic mean that is an integer and also a divisor of n.
Terms
- a(0) =1a(1) =2a(2) =2a(3) =5a(4) =2a(5) =14a(6) =2a(7) =30a(8) =11a(9) =80a(10) =2a(11) =280a(12) =2a(13) =764a(14) =128a(15) =2557a(16) =2a(17) =9036a(18) =2a(19) =29656a(20) =1958a(21) =103134a(22) =2a(23) =373454a(24) =119a(25) =1300824a(26) =36992a(27) =4681568a(28) =2a(29) =17119030
External references
- oeis: A114976