A046547 First denominator and then numerator of the elements to the right of the central elements of the 1/3-Pascal triangle.

1, 1, 1, 1, 3, 4, 1, 1, 3, 7, 1, 1, 1, 5, 3, 10, 1, 1, 3, 25, 3, 13, 1, 1, 3, 55, 3, 38, 3, 16, 1, 1, 1, 31, 1, 18, 3, 19, 1, 1, 3, 203, 1, 49, 3, 73, 3, 22, 1, 1, 3, 350, 3, 220, 3, 95, 3, 25, 1, 1, 1, 252, 1, 190, 1, 105, 1, 40, 3, 28, 1, 1, 1, 442, 1, 295

Offset

1,5

Links

Table of n, a(n) for n=1..76.

Example

1/1; -->
1/1 1/1; --> 1 1
1/1 1/3 1/1; --> 1 1
1/1 4/3 4/3 1/1; --> 3 4 1 1
1/1 7/3 8/3 7/3 1/1; --> ...
1/1 10/3 5/1 5/1 10/3 1/1;
1/1 13/3 25/3 10/1 25/3 13/3 1/1;
1/1 16/3 38/3 55/3 55/3 38/3 16/3 1/1; ...

Crossrefs

Cf. A046534.

Sequence in context: A171528 A299924 A131107 * A016453 A238550 A275886

Adjacent sequences: A046544 A046545 A046546 * A046548 A046549 A046550

Keyword

tabf,nonn,frac,less

Author

Mohammad K. Azarian

Extensions

Data corrected and extended by Sean A. Irvine, Apr 13 2021

Status

approved