A046562 Distinct even numbers in writing first numerator and then denominator of each element to the right of the central elements of the 1/3-Pascal triangle (by row).

4, 10, 38, 16, 18, 22, 350, 220, 252, 190, 40, 28, 442, 148, 946, 440, 34, 254, 2860, 5434, 250, 14014, 3640, 290, 46, 74074, 55432, 11284, 16604, 6380, 616, 155584, 129506, 89284, 50456, 22984, 8228, 428, 52, 95030, 72930, 46580, 24480, 10404, 160, 596258

Offset

1,1

Links

Table of n, a(n) for n=1..46.

Example

1/1; -->
1/1  1/1; -->
1/1  1/3  1/1; -->
1/1  4/3  4/3  1/1; --> 4
1/1  7/3  8/3  7/3  1/1; -->
1/1 10/3  5/1  5/1 10/3  1/1; --> 10
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: A149190 A102755 A197551 * A240382 A220198 A197051

Adjacent sequences: A046559 A046560 A046561 * A046563 A046564 A046565

Keyword

tabf,nonn,less

Author

Mohammad K. Azarian

Extensions

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

Status

approved