A248706 Central terms of triangle A248600.

1, 8, 576, 48320, 5118400, 598123008, 75243589344, 9951304416768, 1366687981264320

Offset

0,2

Comments

a(n) is divisible by C(2*n,n).

Links

Table of n, a(n) for n=0..8.

Example

 Triangle A248600 begins:
[1],
[14, 8, 2],
[786, 1056, 576, 96, 6],
[61340, 131760, 117900, 48320, 9540, 720, 20],
[5562130, 16481920, 20917120, 13847680, 5118400, 1025920, 105280, 4480, 70],
[549676764, 2079579600, 3444581700, 3165926400, 1755532800, 598123008, 123656400, 14716800, 926100, 25200, 252], ...

Crossrefs

Cf. A248600.

Sequence in context: A275932 A058045 A086641 * A325292 A326552 A303933

Adjacent sequences: A248703 A248704 A248705 * A248707 A248708 A248709

Keyword

nonn

Author

Paul D. Hanna, Oct 12 2014

Status

approved