88712domain: NAppears in sequencesn-th row of the following triangle contains n even numbers such that every sum of n-1 of them + 1 is a prime. Sequence contains the triangle by rows.at n=44A083779Diagonal of A083779.at n=8A083780a(n) = Sum_{k=0..floor(n/2)} C(n,2k)*Pell(k).at n=14A101893Prime sieve of Phi.at n=54A247861