A180326 The non-common part of the smaller number of an amicable pair.

55, 592, 655, 1255, 779, 1343, 117, 1081, 685, 4183, 497, 85, 7975, 2233, 209, 7648, 17708, 14231, 10741, 11017, 23171, 4471, 70135, 77155, 22825, 44551, 27341, 4786, 31441, 893, 75049, 76241, 78023, 79453, 80417, 166991, 90763, 7645, 54982, 112277

Offset

1,1

Comments

All terms are composite numbers. Very few duplicates occur: for the amicable numbers less than 10^14, a number appears at most twice.

Links

T. D. Noe, Table of n, a(n) for n=1..10000

Formula

a(n) = A002025(n) / gcd(A002025(n),A002046(n)) = A002025(n) / A061469(n).

Crossrefs

Cf. A180327 (non-common part of the larger number of an amicable pair)

Sequence in context: A183320 A185028 A222797 * A119085 A119170 A119228

Adjacent sequences: A180323 A180324 A180325 * A180327 A180328 A180329

Keyword

nonn

Author

T. D. Noe, Sep 07 2010

Status

approved