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A039305 Number of distinct quadratic residues mod 8^n. 0
1, 3, 12, 87, 684, 5463, 43692, 349527, 2796204, 22369623, 178956972, 1431655767, 11453246124, 91625968983, 733007751852, 5864062014807, 46912496118444, 375299968947543, 3002399751580332, 24019198012642647, 192153584101141164 (list; graph; refs; listen; history; internal format)
OFFSET

0,2

COMMENTS

Number of distinct n-digit suffixes of base 8 squares.

FORMULA

[ (8^n+10)/6 ].

CROSSREFS

Sequence in context: A070825 A077047 A074505 * A174463 A124191 A065087

Adjacent sequences:  A039302 A039303 A039304 * A039306 A039307 A039308

KEYWORD

nonn,easy

AUTHOR

David W. Wilson (davidwwilson(AT)comcast.net)

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Last modified February 14 10:24 EST 2012. Contains 205614 sequences.