Numbers k such that k and k-1 both first appear in the same power of 2 (in base 10).

Terms

a(0) =59a(1) =74a(2) =111a(3) =785a(4) =793a(5) =914a(6) =957a(7) =985a(8) =1070a(9) =1467a(10) =2019a(11) =2099a(12) =2332a(13) =2610a(14) =2934a(15) =3028a(16) =3083a(17) =3311a(18) =3334a(19) =3973a(20) =4198a(21) =4208a(22) =4334a(23) =4590a(24) =4689a(25) =4785a(26) =5247a(27) =5350a(28) =5535a(29) =6166