A030477 - OEIS

A030477

Numbers k such that k^2 has property that all even digits occur together and all odd digits occur together.

0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 17, 18, 20, 21, 22, 24, 25, 28, 29, 30, 32, 34, 38, 40, 42, 44, 45, 47, 49, 51, 53, 56, 58, 60, 62, 65, 67, 68, 72, 76, 78, 79, 80, 83, 86, 88, 91, 92, 93, 98, 100, 102, 108, 118, 120, 122, 124, 132, 134, 138, 140