Denominator of Sum_{k=1..n} 1/(k(k+1)(k+2)(k+3)) = Sum_{k=1..n} 1/Pochhammer(k,4).

Terms

a(0) =1a(1) =24a(2) =20a(3) =360a(4) =315a(5) =1008a(6) =1512a(7) =2160a(8) =1485a(9) =1320a(10) =1716a(11) =2184a(12) =4095a(13) =10080a(14) =12240a(15) =14688a(16) =8721a(17) =20520a(18) =7980a(19) =3080a(20) =5313a(21) =36432a(22) =41400a(23) =46800a(24) =26325a(25) =58968a(26) =65772a(27) =8120a(28) =13485a(29) =9920