1,2

Cf. 2 X n A001047, n X 2 A034182, vertical path of 1 A069361-A069395, vertical paths of 0+1 A069396-A069416, vertical path of 1 not 0 A069417-A069428, no vertical paths A069429-A069447, no horizontal or vertical paths A069448-A069452.

Sequence in context: A005391 A036270 A048454 this_sequence A129124 A124169 A122266

Adjacent sequences: A069417 A069418 A069419 this_sequence A069421 A069422 A069423

nonn

Ron Hardin (rhhardin(AT)att.net), Mar 22 2002.