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A046611 First denominator and then numerator of the central elements of the 1/5-Pascal triangle (by row). 0
1, 1, 5, 1, 5, 12, 5, 46, 1, 34, 1, 126, 5, 2352, 5, 8844, 5, 33462, 1, 25454, 1, 97240, 5, 1864356, 5, 7171892, 5, 27665596, 1, 21395520, 1, 82907640, 1, 321868854, 1, 1251661518, 1, 4874644104, 1, 19010020260, 1, 74225053980, 1, 290134122564, 1 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,3

LINKS

Table of n, a(n) for n=1..45.

EXAMPLE

1/1; 1/1 1/1; 1/1 1/5 1/1; 1/1 6/5 6/5 1/1; 1/1 11/5 12/5 11/5 1/1; 1/1 16/5 23/5 23/5 16/5 1/1; 1/1 21/5 39/5 46/5 39/5 21/5 1/1; 1/1 26/5 12/1 17/1 17/1 12/1 26/5 1/1; ...

CROSSREFS

Cf. A046601.

Sequence in context: A131113 A139426 A143384 * A145825 A101692 A281105

Adjacent sequences:  A046608 A046609 A046610 * A046612 A046613 A046614

KEYWORD

nonn

AUTHOR

Mohammad K. Azarian

EXTENSIONS

More terms from James A. Sellers, Dec 15 1999

STATUS

approved

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Last modified January 18 17:18 EST 2022. Contains 350455 sequences. (Running on oeis4.)