Base-2 digits of a(n) are, in order, the first n terms of the periodic sequence with initial period 1,0,1.

A033120

Base-2 digits of a(n) are, in order, the first n terms of the periodic sequence with initial period 1,0,1.

Terms

    a(0) =1a(1) =2a(2) =5a(3) =11a(4) =22a(5) =45a(6) =91a(7) =182a(8) =365a(9) =731a(10) =1462a(11) =2925a(12) =5851a(13) =11702a(14) =23405a(15) =46811a(16) =93622a(17) =187245a(18) =374491a(19) =748982a(20) =1497965a(21) =2995931a(22) =5991862a(23) =11983725a(24) =23967451a(25) =47934902a(26) =95869805a(27) =191739611a(28) =383479222a(29) =766958445

External references