Sum of first n terms of A_n (using absolute values of terms).

Terms

a(0) =0a(1) =3a(2) =3a(3) =0a(4) =10a(5) =12a(6) =1a(7) =24a(8) =25a(9) =32a(10) =116a(11) =12a(12) =412a(13) =109a(14) =126a(15) =2389a(16) =12497a(17) =28772a(18) =126a(19) =72795a(20) =247786a(21) =770213a(23) =2169128a(24) =442a(25) =311a(26) =378a(27) =789a(28) =10015050a(29) =75a(30) =74253544