a(1) = 0, a(2) = 1, and for n > 2, a(n) = 2*a(A252463(n)) + [n == 1 (mod 2)]*[J(3|n) == 1], where J is the Jacobi-symbol.

A292253

a(1) = 0, a(2) = 1, and for n > 2, a(n) = 2*a(A252463(n)) + [n == 1 (mod 2)]*[J(3|n) == 1], where J is the Jacobi-symbol.

Terms

    a(0) =0a(1) =1a(2) =2a(3) =2a(4) =4a(5) =4a(6) =8a(7) =4a(8) =4a(9) =8a(10) =17a(11) =8a(12) =35a(13) =16a(14) =8a(15) =8a(16) =70a(17) =8a(18) =140a(19) =16a(20) =16a(21) =34a(22) =281a(23) =16a(24) =9a(25) =70a(26) =8a(27) =32a(28) =562a(29) =16

External references