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A046230 First denominator and then numerator of elements to right of central elements of 1/2-Pascal triangle (by row), excluding 2's. 0
1, 1, 1, 1, 3, 1, 1, 5, 1, 1, 11, 7, 1, 1, 1, 9, 9, 1, 1, 1, 20, 27, 11, 1, 1, 67, 1, 19, 13, 1, 1, 147, 105, 51, 15, 1, 1, 1, 126, 1, 78, 1, 33, 17, 1, 1, 1, 273, 1, 204, 1, 111, 83, 19, 1, 1, 1, 477, 1, 315, 305, 1, 51, 21, 1, 1, 1, 1023, 1, 792, 935, 407, 123, 23, 1, 1, 1, 1815 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,5

LINKS

Table of n, a(n) for n=1..78.

EXAMPLE

1/1; 1/1 1/1; 1/1 1/2 1/1; 1/1 3/2 3/2 1/1; 1/1 5/2 3/1 5/2 1/1; 1/1 7/2 11/2 11/2 7/2 1/1; 1/1 9/2 9/1 11/1 9/1 9/2 1/1; 1/1 11/2 27/2 20/1 20/1 27/2 11/2 1/1; ...

CROSSREFS

Cf. A046213.

Sequence in context: A101443 A228037 A184726 * A046229 A255670 A182469

Adjacent sequences:  A046227 A046228 A046229 * A046231 A046232 A046233

KEYWORD

tabf,nonn

AUTHOR

Mohammad K. Azarian

EXTENSIONS

More terms from James A. Sellers, Dec 13 1999

STATUS

approved

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Last modified November 15 06:05 EST 2019. Contains 329144 sequences. (Running on oeis4.)