A058437 Numbers k such that k^2 contains only digits {0,4,6}, not ending with zero.
2, 8, 20992, 21602, 215408, 800037502, 21120134092, 25815899102, 80025400008, 8000254000008, 25815577558262, 254166490010002, 254243985975008, 683085646609592, 800002540000008, 80000025400000008, 635613598504629262, 2457776365832743262, 2542962918459579238
Offset: 1
Links
- Zhao Hui Du, Table of n, a(n) for n = 1..25
- P. De Geest, Index to related sequences
- Hisanori Mishima, Sporadic tridigital solutions
Crossrefs
Cf. A058438.
Extensions
a(16) and above from Zhao Hui Du, Mar 08 2024