Largest value of k for which Golay-Rudin-Shapiro sequence A020986(k) = n.

Terms

a(0) =0a(1) =3a(2) =6a(3) =15a(4) =26a(5) =27a(6) =30a(7) =63a(8) =106a(9) =107a(10) =110a(11) =111a(12) =122a(13) =123a(14) =126a(15) =255a(16) =426a(17) =427a(18) =430a(19) =431a(20) =442a(21) =443a(22) =446a(23) =447a(24) =490a(25) =491a(26) =494a(27) =495a(28) =506a(29) =507