1,1

Cf. 2 X n A000079, n X 1 A000225, 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: A058322 A138128 A069408 this_sequence A135813 A112016 A135982

Adjacent sequences: A069431 A069432 A069433 this_sequence A069435 A069436 A069437

nonn

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