A046589 Distinct even numbers in writing first numerator and then denominator of each element of the 1/4-Pascal triangle (by row).

4, 2, 8, 112, 102, 70, 616, 3432, 6864, 606, 2080, 10920, 17810, 23738, 2686, 28730, 41548, 23766, 70278, 13566, 196, 5320, 102714, 184110, 352716, 286824, 1469650, 11408, 155848, 4293962, 5289448, 2400, 1378850, 9583410, 21915550, 37442160

Offset

1,1

Links

Table of n, a(n) for n=1..36.

Example

1/1; 1/1 1/1; 1/1 1/4 1/1; 1/1 5/4 5/4 1/1; 1/1 9/4 5/2 9/4 1/1; 1/1 13/4 19/4 19/4 13/4 1/1; 1/1 17/4 8/1 19/2 8/1 17/4 1/1; 1/1 21/4 49/4 35/2 35/2 49/4 21/4 1/1; ...

Crossrefs

Cf. A046563.

Sequence in context: A245340 A040174 A084477 * A072562 A190477 A143311

Adjacent sequences: A046586 A046587 A046588 * A046590 A046591 A046592

Keyword

tabf,nonn

Author

Mohammad K. Azarian

Extensions

More terms from James A. Sellers, Dec 14 1999

Status

approved