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 A002381 M2614 N1034 #28 Dec 20 2022 09:18:18
%S A002381 0,1,3,7,8,14,29,31,42,52,66,85,99,143,161,185,190,267,273,304,330,
%T A002381 371,437,476,484,525,603,612,658,806,913,1015,1074,1197,1261,1340,
%U A002381 1394,1463,1477,1548,1606,1680,1771,1912,2009,2075,2159,2262,2439,2698,2717
%N A002381 Numbers of the form (p^2 - 1)/120 where p is 1 or prime.
%C A002381 For n>1, primes p corresponding to a(n) are in A038872(n) = A045468(n-1) = A141158(n). - _Ray Chandler_, Jul 29 2019
%D A002381 H. Gupta, On a conjecture of Chowla, Proc. Indian Acad. Sci., 5A (1937), 381-384.
%D A002381 N. J. A. Sloane, A Handbook of Integer Sequences, Academic Press, 1973 (includes this sequence).
%D A002381 N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).
%H A002381 Ray Chandler, <a href="/A002381/b002381.txt">Table of n, a(n) for n = 1..10000</a>
%H A002381 H. Gupta, <a href="/A002381/a002381.pdf">On a conjecture of Chowla</a>, Proc. Indian Acad. Sci., 5A (1937), 381-384. [Annotated scanned copy]
%t A002381 Join[{0},Select[Table[(p^2-1)/120,{p,Prime[Range[200]]}],IntegerQ]] (* _Harvey P. Dale_, Jan 14 2020 *)
%o A002381 (PARI) j=[]; for(n=0,150,x=prime(n)^2-1; if(Mod(x,120)==0,j=concat(j,(x/120)))); j
%Y A002381 Cf. A002382, A002855, A038872, A045468, A141158, subsequence of A093722.
%K A002381 nonn
%O A002381 1,3
%A A002381 _N. J. A. Sloane_
%E A002381 More terms from _Jason Earls_, Jul 29 2001