A065010 Integers for which the periodic part of the continued fraction for the square root of n begins with 7.

51, 124, 200, 229, 329, 366, 447, 490, 535, 632, 683, 736, 792, 849, 908, 969, 1033, 1098, 1165, 1234, 1235, 1306, 1379, 1454, 1531, 1532, 1611, 1692, 1775, 1776, 1860, 1861, 1948, 2037, 2128, 2129, 2221, 2222, 2317, 2414, 2415, 2513, 2514, 2614, 2615

Offset

1,1

Links

Table of n, a(n) for n=1..45.

Example

The continued fraction for the square root of 84 is 7, {7, 14}.

Mathematica

Select[ Range[3000], First[ Last[ ContinuedFraction[ Sqrt[ # ]]]] == 7 & ]

Crossrefs

Sequence in context: A068564 A063314 A129298 * A365834 A097644 A353987

Adjacent sequences: A065007 A065008 A065009 * A065011 A065012 A065013

Keyword

cofr,easy,nonn

Author

Robert G. Wilson v, Nov 01 2001

Status

approved