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 A076983 #22 Apr 16 2025 05:41:45 %S A076983 1,3,6,36,105,120,780,210,990,630,19110,7140,5460,176715,25200,73920, %T A076983 103740,145530,97020,157080,4744740,2386020,1185030,2031120,3483480, %U A076983 13857480,8817900,118572300,88438350,39209940,286071240,2162160,472612140,953993040,668883600 %N A076983 Smallest triangular number divisible by exactly n triangular numbers. %C A076983 2*a(n) = smallest oblong number with exactly n oblong divisors. - _Ray Chandler_, Jun 29 2008 %H A076983 Amiram Eldar, <a href="/A076983/b076983.txt">Table of n, a(n) for n = 1..155</a> (terms 1..80 from Ray Chandler) %e A076983 a(5) = 105 has 5 divisors which are triangular numbers (1, 3, 15, 21 and 105). %Y A076983 Cf. A000217, A076982, A084260. %K A076983 nonn %O A076983 1,2 %A A076983 _Amarnath Murthy_, Oct 25 2002 %E A076983 More terms from _Lior Manor_, Nov 06 2002 %E A076983 More terms from _Ray Chandler_, Jun 29 2008