A068888 Squares with property that digits alternate in parity individually as well as in concatenation with previous terms.

1, 4, 9, 25, 49, 81, 256, 361, 676, 729, 4761, 6561, 41616, 56169, 69696, 72361, 87616, 96721, 212521, 214369, 290521, 436921, 452929, 458329, 474721, 670761, 690561, 2143296, 3470769, 4145296, 5230369, 8503056, 9078169, 21058921, 21836929, 21874329, 25230529

Offset: 0

Author

Amarnath Murthy, Mar 20 2002

Keywords

• base
• nonn

Crossrefs

Cf. A030152.

Extensions

Missing 81 and 452929 inserted, incorrect 93636 removed, and more terms from Sean A. Irvine, Mar 22 2024