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Search: id:A065808
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| A065808 |
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Square of n has a smaller square as its final digits. |
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+0
2
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| 7, 8, 9, 10, 11, 12, 13, 15, 17, 18, 19, 20, 21, 22, 23, 25, 27, 28, 29, 30, 31, 32, 33, 35, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 65, 67, 68, 69, 70, 71, 72, 73, 75, 77, 78, 79, 80, 81, 82, 83, 85, 87, 88
(list; graph; listen)
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OFFSET
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0,1
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PROGRAM
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(PARI): a065808(m) = local(k, a, b, d, j, n, r); for(k=1, m, a=length(Str(n))-1; b=1; j=1; n=k^2; while(b, d=divrem(n, 10^j); if(d[1]>0&&issquare(d[2]), b=0; issquare(n, &r); print1(r, ", "), if(j<a, j++, b=0)))) a065808(100)
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CROSSREFS
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A065807 gives the corresponding squares.
Cf. A065690, A050635, A050637, A050639, A065777, A065780, A065783, A065786, A065789, A065792.
Sequence in context: A020719 A162787 A023388 this_sequence A062947 A120208 A100562
Adjacent sequences: A065805 A065806 A065807 this_sequence A065809 A065810 A065811
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KEYWORD
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base,easy,nonn
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AUTHOR
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Klaus Brockhaus (klaus-brockhaus(AT)t-online.de), Nov 22 2001
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