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a(n) = floor( exp(11/18)*n! ).
1

%I #10 Sep 08 2022 08:44:50

%S 1,3,11,44,221,1326,9286,74288,668598,6685982,73545804,882549650,

%T 11473145461,160624036454,2409360546814,38549768749031,

%U 655346068733532,11796229237203591,224128355506868246,4482567110137364921,94133909312884663355,2070946004883462593813

%N a(n) = floor( exp(11/18)*n! ).

%o (Magma) [Floor(Exp(11/18)*Factorial(n)): n in [1..20]]; // _Bruno Berselli_, May 13 2015

%K nonn

%O 1,2

%A _Simon Plouffe_

%E More terms from _Bruno Berselli_, May 13 2015