Numbers n such that the sum of the numbers in the Collatz (3x+1) iteration of n is a perfect square.
A225866
Numbers n such that the sum of the numbers in the Collatz (3x+1) iteration of n is a perfect square.
Terms
- a(0) =1a(1) =3a(2) =5a(3) =33a(4) =60a(5) =245a(6) =304a(7) =372a(8) =1265a(9) =1568a(10) =1756a(11) =1799a(12) =1856a(13) =2409a(14) =2532a(15) =2976a(16) =3100a(17) =3281a(18) =3376a(19) =3394a(20) =3813a(21) =5637a(22) =5972a(23) =6147a(24) =6538a(25) =7213a(26) =7299a(27) =7896a(28) =7966a(29) =8371
External references
- oeis: A225866