Number of partitions of [n] such that the number of blocks of size k is a multiple of k for every k.

A374320

Number of partitions of [n] such that the number of blocks of size k is a multiple of k for every k.

Terms

    a(0) =1a(1) =1a(2) =1a(3) =1a(4) =4a(5) =16a(6) =46a(7) =106a(8) =316a(9) =1604a(10) =8156a(11) =33716a(12) =125456a(13) =1073216a(14) =10233224a(15) =69873896a(16) =364469561a(17) =2296961801a(18) =19124734801a(19) =147200743489a(20) =960313414036

External references