Now is the time of year when we ask all users of the OEIS for their annual support.
Click here to donate
to the OEIS Foundation using PayPal or in other ways.
Table of n, a(n) for n=1..60.
37 is in the sequence because lambda(37) = 36 = 6^2.
for n from 1 to 500 do if issqr(numtheory[lambda](n) ) then printf("%d, ", n) ; end if; end do:
Sequence in context: A064955 A101725 A105370 * A190459 A135042 A109666
Adjacent sequences: A173691 A173692 A173693 * A173695 A173696 A173697
Michel Lagneau, Nov 25 2010
Definition rephrased - R. J. Mathar, Nov 26 2010