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1,1

This sequence and A165494 explore a critical aspect of the behavior of A064491.

Table of n, a(n) for n=1..41.

For a(2) we start at 2.3^2=18; 18+tau(18)=24; 24+tau(24)=32; 32+tau(32)=38, which is not divisible by 4, so a(2)=38.

Cf. A064491, A165494, A165496

Sequence in context: A220852 A290176 A003352 * A034858 A249354 A249021

Adjacent sequences: A165492 A165493 A165494 * A165496 A165497 A165498

easy,nonn

Hugo van der Sanden, Sep 21 2009

approved