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A068864
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a(1) = 1; a(n+1) is the smallest square not already in the sequence which differs from a(n) at every digit.
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2
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1, 4, 9, 16, 25, 36, 49, 64, 81, 100, 225, 144, 256, 121, 289, 196, 324, 169, 400, 361, 484, 529, 441, 576, 625, 784, 676, 729, 841, 900, 1024, 961, 1089, 2116, 1225, 2304, 1156, 2025, 1296, 2401, 1369, 2500, 1444, 2209, 1521, 2704, 1681, 2809, 1764, 2601
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listen;
history;
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OFFSET
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1,2
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COMMENTS
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LINKS
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EXAMPLE
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144 follows 225 as the smallest square not included earlier and differing at every digit position with 225.
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PROG
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(PARI) \\ See PARI link
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CROSSREFS
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KEYWORD
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AUTHOR
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EXTENSIONS
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Edited by Larry Reeves (larryr(AT)acm.org), Oct 09 2003
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STATUS
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approved
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