A046542 Odd numbers among the numerators of the 1/3-Pascal triangle (by row).

1, 1, 1, 1, 1, 1, 1, 1, 1, 7, 7, 1, 1, 5, 5, 1, 1, 13, 25, 25, 13, 1, 1, 55, 55, 1, 1, 19, 31, 31, 19, 1, 1, 73, 49, 203, 203, 49, 73, 1, 1, 25, 95, 95, 25, 1, 1, 105, 105, 1, 1, 31, 145, 295, 295, 145, 31, 1, 1, 179, 583, 737, 737, 583, 179, 1, 1, 37, 71

Offset

1,10

Links

Table of n, a(n) for n=1..69.

Example

1/1; 1/1 1/1; 1/1 1/3 1/1; 1/1 4/3 4/3 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: A241009 A278657 A242914 * A172351 A140136 A281123

Adjacent sequences: A046539 A046540 A046541 * A046543 A046544 A046545

Keyword

tabf,nonn,less

Author

Mohammad K. Azarian

Extensions

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

Status

approved