91217

Appears in sequences

• a(1)=1, a(n)=a(n-a(1))+a(n-a(2))+a(n-a(3))+....a(n-a(n-1)) for n>1, with convention that a(i)=0 for i<=0.at n=14A052109
• Numbers k such that (prime(j)-1)^2 + 1 is prime for k <= j <= k + 2.at n=45A376522