[ exp(11/14)*n! ].

Terms

a(0) =2a(1) =4a(2) =13a(3) =52a(4) =263a(5) =1579a(6) =11057a(7) =88461a(8) =796149a(9) =7961491a(10) =87576401a(11) =1050916819a(12) =13661918650a(13) =191266861113