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A115873 First column of A115872. 4
1, 1, 3, 1, 7, 3, 7, 1, 15, 7, 3, 3, 5, 7, 15, 1, 31, 15, 7, 7, 31, 3, 7, 3, 31, 5, 31, 7, 31, 15, 31, 1, 63, 31, 15, 15, 7, 7, 7, 7, 63, 31, 3, 3, 63, 7, 15, 3, 21, 31, 63, 5, 63, 31, 7, 7, 9, 31, 63, 15, 21, 31, 63, 1, 127, 63, 31, 31, 15, 15, 15, 15, 127, 7, 31, 7, 15, 7, 15, 7, 51 (list; graph; refs; listen; history; internal format)
OFFSET

1,3

COMMENTS

a(2^k) = 1, a(2n) = a(n).

CROSSREFS

Cf. A114395, A114396.

Sequence in context: A135540 A161942 A053092 * A083239 A189050 A095868

Adjacent sequences:  A115870 A115871 A115872 * A115874 A115875 A115876

KEYWORD

nonn

AUTHOR

Antti Karttunen (His-Firstname.His-Surname(AT)gmail.com), Feb 07 2006

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Last modified February 16 02:51 EST 2012. Contains 205860 sequences.