1,1

Cf. 1 X n A000225, 2 X n A016269, 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: A014233 A022193 A069386 this_sequence A069438 A131952 A065341

Adjacent sequences: A069409 A069410 A069411 this_sequence A069413 A069414 A069415

nonn

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