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 A333024 #8 Mar 07 2020 08:38:08 %S A333024 100,26734060,3149734998,12960114796,15685683796,24077884060, %T A333024 36987943996,38809984996,62521251798,76314338740,319408651400 %N A333024 Starts of runs of 7 consecutive even numbers that are all totient numbers (A002202). %H A333024 Wikipedia, <a href="https://en.wikipedia.org/wiki/Euler%27s_totient_function#Totient_numbers">Totient numbers</a>. %e A333024 100 is a term since the 7 even numbers 100, 102, ... 112 are all totient numbers. %o A333024 (PARI) m = 7; v = vector(m); for(k=1, m, v[k] = istotient(2*k)); for(k = m+1, 1.5e7, if(Set(v) == [1], print1(2*(k-m),", ")); v = concat(v[2..m], istotient(2*k))) %Y A333024 Cf. A000010, A002202, A005277, A063512, A083533, A333019, A333020, A333021, A333022, A333023. %K A333024 nonn,more %O A333024 1,1 %A A333024 _Amiram Eldar_, Mar 05 2020 %E A333024 a(9)-a(11) from _Giovanni Resta_, Mar 07 2020