Define E(n) = Sum_{k>=0} (-1)^floor(k/3)*k^n/k! for n = 0,1,2,... . Then E(n) is an integral linear combination of E(0), E(1) and E(2). This sequence lists the coefficients of E(1).

A143629

Define E(n) = Sum_{k>=0} (-1)^floor(k/3)*k^n/k! for n = 0,1,2,... . Then E(n) is an integral linear combination of E(0), E(1) and E(2). This sequence lists the coefficients of E(1).

Terms

    a(0) =0a(1) =1a(2) =0a(3) =-2a(4) =-7a(5) =-23a(6) =-80a(7) =-271a(8) =-750a(9) =-647a(10) =13039a(11) =152011a(12) =1232583a(13) =8750796a(14) =57405464a(15) =349329354a(16) =1899818951a(17) =8008845556a(18) =5981853002a(19) =-425732481925

External references