Terms k of A025487 such that A000005(k) = A000688(k).

A369169

Terms k of A025487 such that A000005(k) = A000688(k).

Terms

    a(0) =1a(1) =16a(2) =1296a(3) =23040a(4) =810000a(5) =7257600a(6) =16934400a(7) =283852800a(8) =1437004800a(9) =1944810000a(10) =13970880000a(11) =30735936000a(12) =232475443200a(13) =852409958400

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