6,1
Cf. A028422.
Sequence in context: A074673 A020395 A069456 this_sequence A045027 A023067 A110597
Adjacent sequences: A031126 A031127 A031128 this_sequence A031130 A031131 A031132
nonn
Jeff Burch (jmburch(AT)osprey.smcm.edu)
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