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A053924
Numbers k such that k^2 contains only digits {2,4,9}.
2
2, 3, 7, 173, 212, 307, 1557, 3038, 4788, 6557, 9607, 70173, 222327, 649788, 7015857, 17173882, 22349368, 30402212, 1514009327, 5470304327, 67081614057, 171739460943, 205534649693, 473521111382, 666553067838, 3069922300307, 210765865339462
OFFSET
1,1
CROSSREFS
Cf. A053925.
Sequence in context: A007013 A103405 A087311 * A130060 A224894 A266269
KEYWORD
nonn,base
AUTHOR
Patrick De Geest, Mar 15 2000
EXTENSIONS
More terms from C. Ronaldo (aga_new_ac(AT)hotmail.com), Jan 03 2005
a(26) and above from Zhao Hui Du, Mar 09 2024
STATUS
approved