Erroneous version of A047841.

Terms

a(0) =22a(1) =10213223a(2) =10311233a(3) =21322314a(4) =21322315a(5) =21322316a(6) =21322317a(7) =21322318a(8) =21322319a(9) =31123314a(10) =31123315a(11) =31123316a(12) =31123317a(13) =31123318a(14) =31123319a(15) =31331415a(16) =31331416a(17) =31331417a(18) =31331418a(19) =31331419a(20) =31331516a(21) =31331517a(22) =31331518