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A068809
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Squares with strictly increasing sum of digits.
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7
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1, 4, 9, 49, 169, 289, 1849, 3969, 6889, 27889, 69696, 97969, 499849, 698896, 2778889, 4999696, 9696996, 19998784, 46689889, 66699889, 79869969, 277788889, 478996996, 876988996, 1749999889, 5599977889, 7998976969, 8998988769, 17999978896
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graph;
refs;
listen;
history;
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internal format)
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OFFSET
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1,2
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LINKS
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Kevin Buzzard, Table of n, a(n) for n = 1..57
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MAPLE
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A007953 := proc(n) option remember: return add(d, d=convert(n, base, 10)): end: A068947 := proc(n) option remember: local k, p: if(n=1)then return 1: fi: k:=procname(n-1): p:=A007953(k^2): do k:=k+1: if(A007953(k^2)>p)then return k: fi: od: end: seq(A068947(n)^2, n=1..20); # Nathaniel Johnston, May 04 2011
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CROSSREFS
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Cf. A068947, A068948, A068949, A068950, A068952, A069324.
Sequence in context: A019544 A053059 A006716 * A110481 A030088 A081069
Adjacent sequences: A068806 A068807 A068808 * A068810 A068811 A068812
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KEYWORD
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base,nonn
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AUTHOR
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Amarnath Murthy (amarnath_murthy(AT)yahoo.com), Mar 06 2002
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EXTENSIONS
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More terms from Francois Jooste (phukraut(AT)hotmail.com), Mar 15 2002
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STATUS
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approved
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