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 A069762 #16 May 20 2024 10:30:37 %S A069762 51,191,609,1324,2813,4711,8576,13894,23319,34165,51661,71126,100529, %T A069762 136239,187543,241586,321251,404839,516704,645358,813141,982651, %U A069762 1221299,1463734,1767473,2106271,2524101,2940909,3500209,4061663,4736456,5474526,6352219,7228469 %N A069762 Frobenius number of the numerical semigroup generated by three consecutive pyramidal numbers. %C A069762 Frobenius number of a numerical semigroup generated by relatively prime integers a_1,...,a_n is the largest positive integer that is not a nonnegative linear combination of a_1,...,a_n. Since three consecutive pyramidal numbers are relatively prime, they generate a numerical semigroup with a Frobenius number. %H A069762 R. Fröberg, C. Gottlieb and R. Häggkvist, <a href="https://eudml.org/doc/134857">On numerical semigroups</a>, Semigroup Forum, 35 (1987), 63-83 (for definition of Frobenius number). %e A069762 a(2)=51 because 51 is not a nonnegative linear combination of 5, 14 and 30, but all integers greater than 51 are. %Y A069762 Cf. A000330, A037165, A059769, A069755-A069764. %K A069762 easy,nonn %O A069762 2,1 %A A069762 Victoria A Sapko (vsapko(AT)canes.gsw.edu), Apr 18 2002 %E A069762 More terms from and offset corrected by _Sean A. Irvine_, May 19 2024