Number of partitions of {1,...,n} containing 2 strings of 3 consecutive integers such that only v-strings of consecutive integers can appear in a block, where v = 1,2,3.

A105492

Number of partitions of {1,...,n} containing 2 strings of 3 consecutive integers such that only v-strings of consecutive integers can appear in a block, where v = 1,2,3.

Terms

    a(0) =1a(1) =6a(2) =36a(3) =210a(4) =1260a(5) =7833a(6) =50701a(7) =342126a(8) =2406645a(9) =17633820a(10) =134427468a(11) =1064801442a(12) =8751834839a(13) =74540800014

External references