Binomial coefficients C(55,n).

Terms

a(0) =1a(1) =55a(2) =1485a(3) =26235a(4) =341055a(5) =3478761a(6) =28989675a(7) =202927725a(8) =1217566350a(9) =6358402050a(10) =29248649430a(11) =119653565850a(12) =438729741450