1,1
Jocelyn Quaintance, Combinatoric Enumeration of Two-Dimensional Proper Arrays, Discrete Math., 307 (2007), 1844-1864.
See Quaintance reference for generating functions that produce A129872-A129886.
Sequence in context: A034409 A048049 A057772 this_sequence A021983 A038730 A050166
Adjacent sequences: A129871 A129872 A129873 this_sequence A129875 A129876 A129877
nonn
njas, May 26 2007
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