This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A248706 #6 Apr 15 2025 18:50:49 %S A248706 1,8,576,48320,5118400,598123008,75243589344,9951304416768, %T A248706 1366687981264320 %N A248706 Central terms of triangle A248600. %C A248706 a(n) is divisible by C(2*n,n). %e A248706 Triangle A248600 begins: %e A248706 [1], %e A248706 [14, 8, 2], %e A248706 [786, 1056, 576, 96, 6], %e A248706 [61340, 131760, 117900, 48320, 9540, 720, 20], %e A248706 [5562130, 16481920, 20917120, 13847680, 5118400, 1025920, 105280, 4480, 70], %e A248706 [549676764, 2079579600, 3444581700, 3165926400, 1755532800, 598123008, 123656400, 14716800, 926100, 25200, 252], ... %Y A248706 Cf. A248600. %K A248706 nonn %O A248706 0,2 %A A248706 _Paul D. Hanna_, Oct 12 2014