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 A359624 #19 Jan 27 2023 13:34:13
%S A359624 1054,1786,2110,2710,4294,5134,6634,7885,8326,10210,12835,13114,14554,
%T A359624 17014,22510,24769,25546,26335,30889,32635,36271,42085,44635,45154,
%U A359624 47794,49414,52174,52735,53866,56746,58510,61510,63346,66466,68374,71614,73594,75601,76954,84610,88210
%N A359624 Centered triangular numbers which are products of three distinct primes.
%C A359624 A squarefree subsequence of centered triangular numbers.
%e A359624 1054 = 2 * 17 * 31 = (3 * 27 * (27 - 1) / 2) + 1.
%e A359624 1786 = 2 * 19 * 47 = (3 * 35 * (35 - 1) / 2) + 1.
%e A359624 7885 = 5 * 19 * 83 = (3 * 73 * (73 - 1) / 2) + 1.
%t A359624 Select[Table[3*n*(n - 1)/2 + 1, {n, 1, 250}], FactorInteger[#][[;; , 2]] == {1, 1, 1} &] (* _Amiram Eldar_, Jan 08 2023 *)
%Y A359624 Intersection of A005448 and A007304.
%K A359624 nonn
%O A359624 1,1
%A A359624 _Massimo Kofler_, Jan 08 2023