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A066905 Squares in A006577. 1
0, 1, 16, 9, 9, 4, 16, 16, 16, 9, 9, 9, 25, 25, 25, 25, 25, 100, 121, 36, 36, 36, 36, 49, 16, 16, 16, 16, 16, 16, 16, 16, 81, 81, 9, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 100, 100, 100, 25, 144, 25, 100, 25, 25, 144, 144, 25, 25, 144, 64, 64, 64, 64, 64, 25, 25, 64, 64 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,3

COMMENTS

This series is very dense as n increases. All squares from n=0 to 16,18 have been located. - Randall L. Rathbun, Jan 17 2002

LINKS

Table of n, a(n) for n=0..67.

MATHEMATICA

steps[ n_ ] := For[ nn=n; ct=0, True, ct++, If[ nn==1, Return[ ct ] ]; nn=If[ EvenQ[ nn ], nn/2, 3nn+1 ] ]; Select[ steps/@Range[ 1, 1000 ], IntegerQ[ Sqrt[ # ] ]& ]

CROSSREFS

Cf. A006577, A066773.

Sequence in context: A070535 A070579 A278829 * A302683 A302518 A070567

Adjacent sequences:  A066902 A066903 A066904 * A066906 A066907 A066908

KEYWORD

nonn

AUTHOR

K.B.Subramaniam (kb_subramaniambalu(AT)yahoo.com), Dec 20 2001

EXTENSIONS

More terms from Dean Hickerson, Jan 19 2002

STATUS

approved

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Last modified August 11 04:03 EDT 2020. Contains 336421 sequences. (Running on oeis4.)