Number of partitions of {1...n} containing 4 pairs of consecutive integers, where each pair is counted within a block and a string of more than 2 consecutive integers are counted two at a time.

A105481

Number of partitions of {1...n} containing 4 pairs of consecutive integers, where each pair is counted within a block and a string of more than 2 consecutive integers are counted two at a time.

Terms

    a(0) =1a(1) =5a(2) =30a(3) =175a(4) =1050a(5) =6552a(6) =42630a(7) =289410a(8) =2049300a(9) =15120105a(10) =116090975a(11) =926248050a(12) =7668746540a(13) =65793760060a(14) =584151925320

External references