A diagonal of rectangular array A274390 of coefficients in the iterations of Euler's tree function (A000169).
A274392
A diagonal of rectangular array A274390 of coefficients in the iterations of Euler's tree function (A000169).
Terms
- a(0) =1a(1) =4a(2) =63a(3) =2056a(4) =112625a(5) =9266706a(6) =1067280319a(7) =163802295616
External references
- oeis: A274392