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

Terms

a(0) =1a(1) =2a(2) =4a(3) =36a(4) =2330a(5) =3274a(6) =7195a(7) =28106a(8) =38508a(9) =74032a(10) =74935a(11) =203763a(12) =264407a(13) =431066a(14) =1679581a(15) =2473728a(16) =2790505a(17) =9118184a(18) =10686256a(19) =39154390a(20) =64918230a(21) =3725272877a(22) =6503732261a(23) =10906782833a(24) =33507112881a(25) =34193678041