A046617 First numerator and then denominator of the elements to the right of the central elements of the 1/5-Pascal triangle (by row), excluding 5's.

1, 1, 1, 1, 6, 1, 1, 11, 1, 1, 23, 16, 1, 1, 39, 21, 1, 1, 17, 1, 12, 1, 26, 1, 1, 29, 1, 86, 31, 1, 1, 63, 1, 231, 117, 36, 1, 1, 546, 348, 153, 41, 1, 1, 1176, 894, 501, 194, 46, 1, 1, 414, 1, 279, 1, 139, 1, 48, 1, 51, 1, 1, 4422, 693, 1, 418, 1, 187, 1, 291, 56, 1, 1, 7887

Offset

1,5

Links

Table of n, a(n) for n=1..74.

Example

1/1; 1/1 1/1; 1/1 1/5 1/1; 1/1 6/5 6/5 1/1; 1/1 11/5 12/5 11/5 1/1; 1/1 16/5 23/5 23/5 16/5 1/1; 1/1 21/5 39/5 46/5 39/5 21/5 1/1; 1/1 26/5 12/1 17/1 17/1 12/1 26/5 1/1; ...

Crossrefs

Cf. A046601.

Sequence in context: A363291 A144395 A046621 * A131063 A081579 A295707

Adjacent sequences: A046614 A046615 A046616 * A046618 A046619 A046620

Keyword

tabf,nonn

Author

Mohammad K. Azarian

Extensions

More terms from James A. Sellers, Dec 16 1999

Status

approved