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A255430
Natural numbers n, not multiples of 10, such that n and n^2 lack the digit 1 in their decimal expansions.
3
2, 3, 5, 6, 7, 8, 22, 23, 24, 25, 26, 27, 28, 45, 47, 48, 52, 53, 55, 57, 58, 62, 63, 64, 65, 66, 67, 68, 73, 74, 75, 76, 77, 78, 82, 83, 84, 85, 86, 87, 88, 92, 93, 94, 95, 97, 98, 202, 205, 206, 207, 208, 222, 223, 225, 232, 233, 234, 235, 236, 238, 242, 243, 244, 245, 252, 253, 255
OFFSET
1,1
COMMENTS
No trailing zeros allowed.
CROSSREFS
KEYWORD
nonn,base
AUTHOR
Zak Seidov, Feb 23 2015
STATUS
approved