A046551 Numerators of the elements to the right of the central elements of the 1/3-Pascal triangle (by row).

1, 1, 4, 1, 7, 1, 5, 10, 1, 25, 13, 1, 55, 38, 16, 1, 31, 18, 19, 1, 203, 49, 73, 22, 1, 350, 220, 95, 25, 1, 252, 190, 105, 40, 28, 1, 442, 295, 145, 148, 31, 1, 946, 737, 440, 583, 179, 34, 1, 1683, 1177, 1903, 254, 71, 37, 1, 3575, 2860, 5434, 2665, 325

Offset

1,3

Links

Table of n, a(n) for n=1..61.

Example

1/1; -->
1/1 1/1; --> 1
1/1 1/3 1/1; --> 1
1/1 4/3 4/3 1/1; --> 4 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: A140703 A346533 A157259 * A065814 A329347 A348981

Adjacent sequences: A046548 A046549 A046550 * A046552 A046553 A046554

Keyword

tabf,nonn,frac,less

Author

Mohammad K. Azarian

Extensions

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

Status

approved