Engel expansion of Sum_{k>=0} 1/(2 + k)^k.

Terms

a(0) =1a(1) =3a(2) =5a(3) =15a(4) =20a(5) =124a(6) =141a(7) =1085a(8) =1221a(9) =5267a(10) =9814a(11) =9899a(12) =179888a(13) =531293a(14) =43914936a(15) =59108249a(16) =129482155a(17) =290253117a(18) =297264974a(19) =329981693a(20) =515700524a(21) =1791622856a(22) =29237782307a(23) =289017844013