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Search: id:A035069
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A035069 a(n) is root of square starting with digit 2: first term of runs. +0
3
5, 15, 45, 142, 448, 1415, 4473, 14143, 44722, 141422, 447214, 1414214, 4472136, 14142136, 44721360, 141421357, 447213596, 1414213563, 4472135955, 14142135624, 44721359550, 141421356238, 447213595500, 1414213562374 (list; graph; listen)
OFFSET

0,1
FORMULA

ceiling(sqrt((2*10^n))

CROSSREFS

Cf. A067472 (squares), A035076 (2..9).

Sequence in context: A005030 A084244 A099235 this_sequence A001869 A058425 A079798

Adjacent sequences: A035066 A035067 A035068 this_sequence A035070 A035071 A035072

KEYWORD

nonn,base

AUTHOR

Patrick De Geest (pdg(AT)worldofnumbers.com), Nov 15 1998.

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Last modified November 25 20:09 EST 2009. Contains 167514 sequences.

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