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Table of n, a(n) for n=1..43.
a(12) = (2^12 -1)/((2^2 -1) (2^3 -1)) = 195
Sequence in context: A155059 A206076 A115638 * A215010 A136744 A068237
Adjacent sequences: A055512 A055513 A055514 * A055516 A055517 A055518
Leroy Quet Jul 03 2000