4,2
G.f.: x^4(1+2x)/[(1-x)^4*(1-x-x^2)]. - Ralf Stephan, Feb 07 2004
Sequence in context: A068601 A006325 A053346 this_sequence A078501 A027937 A135026
Adjacent sequences: A027961 A027962 A027963 this_sequence A027965 A027966 A027967
nonn
Clark Kimberling (ck6(AT)evansville.edu)
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