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 A386524 #25 Aug 05 2025 22:17:38 %S A386524 5,6,8,15,26,69,134,393,1556,4659,9314,27933,921327,85680249, %T A386524 171360494,2227686253,17821489976,124750429783,17589810592353, %U A386524 70359242369396,11046401051970523,22092802103941042,1634867355691634222,238690633930978585462,45589911080816909786761,2963344220253099136138295,2474392423911337778675332705 %N A386524 a(n+1) is the smallest product of two or more primes which sum to a(n), starting from a(1) = 5. %C A386524 a(1) = 5 is a prime and is not taken as a sum of just itself, but thereafter terms are never prime. %H A386524 David A. Corneth, <a href="/A386524/a386524.gp.txt">PARI program</a> %e A386524 For n=2, a(2) = 8 and the possible sums of primes are 2+2+2+2 = 8 or 3+5 = 8 and the smallest product of those terms is 3*5=15 (versus 2*2*2*2=16) so that a(3) = 15. %o A386524 (PARI) \\ See Corneth link %Y A386524 Cf. A056240. %K A386524 nonn %O A386524 1,1 %A A386524 _Marc Morgenegg_, Jul 24 2025 %E A386524 More terms from _David A. Corneth_, Jul 28 2025