A046540 Denominators of the 1/3-Pascal triangle (by row).

1, 1, 1, 1, 3, 1, 1, 3, 3, 1, 1, 3, 3, 3, 1, 1, 3, 1, 1, 3, 1, 1, 3, 3, 1, 3, 3, 1, 1, 3, 3, 3, 3, 3, 3, 1, 1, 3, 1, 1, 3, 1, 1, 3, 1, 1, 3, 3, 1, 3, 3, 1, 3, 3, 1, 1, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 3, 1, 1, 1, 1, 1, 1, 1, 1, 3, 1, 1, 3, 3, 1, 1, 1, 1, 1, 1

Offset

1,5

Links

Table of n, a(n) for n=1..87.

Example

1/1; --> 1
1/1  1/1; --> 1 1
1/1  1/3  1/1; --> 1 3 1
1/1  4/3  4/3  1/1; --> 1 3 3 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: A269301 A348221 A132429 * A123191 A157454 A106255

Adjacent sequences: A046537 A046538 A046539 * A046541 A046542 A046543

Keyword

tabl,nonn,frac

Author

Mohammad K. Azarian

Extensions

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

Status

approved