Numbers k such that the number of odd divisors of k is an odd divisor of k, and the number of even divisors of k is an even divisor of k.

A181795

Numbers k such that the number of odd divisors of k is an odd divisor of k, and the number of even divisors of k is an even divisor of k.

Terms

    a(0) =4a(1) =16a(2) =36a(3) =144a(4) =256a(5) =576a(6) =900a(7) =1764a(8) =2304a(9) =2500a(10) =3600a(11) =4356a(12) =6084a(13) =7056a(14) =8100a(15) =10000a(16) =10404a(17) =12996a(18) =17424a(19) =19044a(20) =22500a(21) =24336a(22) =26244a(23) =30276a(24) =32400a(25) =34596a(26) =36864a(27) =41616a(28) =49284a(29) =51984

External references