Number of compositions of n such that the set of parts and the set of multiplicities of parts are equal.

A336031

Number of compositions of n such that the set of parts and the set of multiplicities of parts are equal.

Terms

    a(0) =1a(1) =1a(2) =0a(3) =0a(4) =4a(5) =3a(6) =4a(7) =0a(8) =5a(9) =1a(10) =70a(11) =120a(12) =122a(13) =130a(14) =446a(15) =0a(16) =277a(17) =726a(18) =370a(19) =1064a(20) =13751a(21) =38913a(22) =41272a(23) =81168a(24) =137014a(25) =84448a(26) =300642a(27) =490540a(28) =517806a(29) =341033

External references