Number of set partitions of [n] into four blocks with distinct sizes.

A272516

Number of set partitions of [n] into four blocks with distinct sizes.

Terms

    a(0) =12600a(1) =27720a(2) =138600a(3) =643500a(4) =4408404a(5) =12687675a(6) =60780720a(7) =238299880a(8) =1295666424a(9) =4208874756a(10) =18840460800a(11) =72351683460a(12) =361100656224

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