Number of ways of writing n as a+b where a is abundant (or perfect), b is deficient (or perfect) and s(a)-a=b-s(b) (s(x)=sigma(x)-x).
A037134
Number of ways of writing n as a+b where a is abundant (or perfect), b is deficient (or perfect) and s(a)-a=b-s(b) (s(x)=sigma(x)-x).
Terms
- a(0) =0a(1) =0a(2) =0a(3) =0a(4) =0a(5) =0a(6) =0a(7) =0a(8) =0a(9) =0a(10) =0a(11) =1a(12) =0a(13) =0a(14) =0a(15) =0a(16) =1a(17) =0a(18) =0a(19) =0a(20) =0a(21) =0a(22) =1a(23) =0a(24) =0a(25) =1a(26) =0a(27) =0a(28) =0a(29) =1
External references
- oeis: A037134