a(2n+1) = |a(2n) - a(2n-1)|, a(2n) = a(n) + a(n-1).

A020945

a(2n+1) = |a(2n) - a(2n-1)|, a(2n) = a(n) + a(n-1).

Terms

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

External references