Number of quanimous subsets of {1..n}, meaning there is more than one set partition with all equal block-sums.
A371796
Number of quanimous subsets of {1..n}, meaning there is more than one set partition with all equal block-sums.
Terms
- a(0) =0a(1) =0a(2) =0a(3) =1a(4) =3a(5) =8a(6) =19a(7) =43a(8) =94a(9) =206a(10) =439a(11) =946a(12) =1990a(13) =4204a(14) =8761a(15) =18233a(16) =37778a(17) =78151a(18) =160296a(19) =328670a(20) =670193a(21) =1363543a(22) =2772436a(23) =5632801a(24) =11404156a(25) =23071507a(26) =46613529a(27) =94098106a(28) =189959349a(29) =383407198
External references
- oeis: A371796