1,2
1 (1); 12 (7); 123 (38); 1234 (194); 12341 (971); 123410 (4855); ...
Cf. A055143-A055150.
Sequence in context: A026895 A037605 A128726 this_sequence A014827 A141845 A048437
Adjacent sequences: A055143 A055144 A055145 this_sequence A055147 A055148 A055149
nonn,base
Patrick De Geest (pdg(AT)worldofnumbers.com), Apr 15 2000.
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