2,2
A diagonal of square array A085388.
Milan Janjic, Enumerative Formulas for Some Functions on Finite Sets
Cf. A085389, A053506.
Sequence in context: A051643 A000891 A129840 this_sequence A065980 A073767 A108206
Adjacent sequences: A085387 A085388 A085389 this_sequence A085391 A085392 A085393
easy,nonn
Paul Barry (pbarry(AT)wit.ie), Jun 30 2003
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