1,1
C. Kimberling, Problem 10520 in Amer. Math. Mon. 103 (1996) p. 347.
Sequence in context: A023497 A105600 A072174 this_sequence A020750 A020713 A090990
Adjacent sequences: A020955 A020956 A020957 this_sequence A020959 A020960 A020961
nonn
Clark Kimberling (ck6(AT)evansville.edu)
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