A137759 - OEIS

A137759

Odd numbers in writing first numerator and then denominator (left to right) of Leibniz's harmonic-like triangle.

1, 1, 1, 1, 1, 3, 5, 1, 3, 1, 7, 7, 1, 1, 5, 9, 31, 9, 1, 5, 1, 11, 49, 49, 11, 1, 1, 7, 13, 71, 105, 209, 71, 105, 13, 1, 7, 1, 15, 97, 351, 351, 97, 15, 1, 1, 9, 17, 127, 545, 1471, 545, 127, 17, 1, 9, 1, 19, 161, 799, 2561, 2561, 799, 161, 19, 1

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,6

LINKS

Table of n, a(n) for n=1..66.

EXAMPLE

1/1; --> 1 1

1/2, 1/2; --> 1 1

1/3, 5/6, 1/3; --> 1 3 5 1 3

1/4, 7/12, 7/12, 1/4; -->

1/5, 9/20, 31/30, 9/20, 1/5;

CROSSREFS

Cf. A003506, A007622, A046201, A046204, A046205, A046206, A046208, A046212, A137752, A137753, A137754, A137755, A137756, A137757, A137758.

Sequence in context: A127250 A350882 A230407 * A049246 A231186 A021078

Adjacent sequences: A137756 A137757 A137758 * A137760 A137761 A137762

KEYWORD

frac,nonn,tabf,less

AUTHOR

Mohammad K. Azarian, Feb 11 2008

STATUS

approved