Starts of runs of 4 consecutive Niven numbers in base 2 (A049445).

Terms

a(0) =6222a(1) =33102a(2) =53262a(3) =66702a(4) =94830a(5) =221550a(6) =268302a(7) =284910a(8) =295182a(9) =300750a(10) =316590a(11) =364110a(12) =379950a(13) =427470a(14) =533950a(15) =554190a(16) =570030a(17) =590862a(18) =617550a(19) =633390a(20) =696750a(21) =791790a(22) =807630a(23) =855150a(24) =870990a(25) =902670a(26) =934350a(27) =1081422a(28) =1140270a(29) =1282830