Every integer eventually goes to one of these under the "x goes to sum of squares of digits of x" map.

A039943

Every integer eventually goes to one of these under the "x goes to sum of squares of digits of x" map.

Terms

    a(0) =0a(1) =1a(2) =4a(3) =16a(4) =20a(5) =37a(6) =42a(7) =58a(8) =89a(9) =145

External references