A046548 First numerator and then denominator of the elements to the right of the central elements of the 1/3-Pascal triangle (by row), excluding 1's.

4, 3, 7, 3, 5, 10, 3, 25, 3, 13, 3, 55, 3, 38, 3, 16, 3, 31, 18, 19, 3, 203, 3, 49, 73, 3, 22, 3, 350, 3, 220, 3, 95, 3, 25, 3, 252, 190, 105, 40, 28, 3, 442, 295, 145, 148, 3, 31, 3, 946, 737, 440, 583, 3, 179, 3, 34, 3, 1683, 1177, 1903, 3, 254, 71, 37, 3

Offset

1,1

Links

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

Example

1/1; -->
1/1 1/1; -->
1/1 1/3 1/1; -->
1/1 4/3 4/3 1/1; --> 4 3
1/1 7/3 8/3 7/3 1/1; --> 7 3
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: A336741 A072816 A340012 * A127752 A198874 A276760

Adjacent sequences: A046545 A046546 A046547 * A046549 A046550 A046551

Keyword

tabf,nonn,frac,less

Author

Mohammad K. Azarian

Extensions

Corrected and extended by Sean A. Irvine, Apr 13 2021

Status

approved