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A161815 Numerator of fraction in Redheffer type matrix. 2
1, 1, 1, 1, 1, 3, 3, 7, 11, 27, 27, 91, 91, 283, 539, 923, 923, 3739, 3739 (list; graph; refs; listen; history; internal format)
OFFSET

1,6

COMMENTS

The determinant of a Redheffer type matrix with the fraction A161815/A161816 interleaved with k - 1 zeros in the columns reproduces the same fraction. The partials sums of the fractions might converge to a constant.

CROSSREFS

Cf. A161816.

Sequence in context: A022403 A082550 A036056 * A006661 A068626 A126698

Adjacent sequences:  A161812 A161813 A161814 * A161816 A161817 A161818

KEYWORD

frac,nonn

AUTHOR

Mats Granvik (mats.granvik(AT)abo.fi), Jun 20 2009

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Last modified February 15 23:53 EST 2012. Contains 205860 sequences.