A046557 Distinct odd numbers in the numerators of the 1/3-Pascal triangle (by row).

1, 7, 5, 13, 25, 55, 19, 31, 73, 49, 203, 95, 105, 145, 295, 179, 583, 737, 37, 71, 1903, 1177, 1683, 325, 2665, 3575, 43, 1225, 8099, 6435, 111, 505, 4865, 3913, 7371, 33319, 13585, 379, 2227, 885, 3485, 535, 1045, 13889, 61, 593, 5415, 18259, 48773, 1421

Offset

1,2

Links

Table of n, a(n) for n=1..50.

Example

1/1; --> 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; --> 7
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: A107323 A265794 A265818 * A298722 A299556 A282978

Adjacent sequences: A046554 A046555 A046556 * A046558 A046559 A046560

Keyword

tabf,nonn,frac,less

Author

Mohammad K. Azarian

Extensions

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

Status

approved