269971011311domain: NAppears in sequencesSemiprimes of the form m^10 - m^9 + m^8 - m^7 + m^6 - m^5 + m^4 - m^3 + m^2 - m + 1.at n=4A245483a(n) = Sum_{k = 0..n} (-1)^k*14^k.at n=10A268413a(n) = Sum_{j=0..10} (-n)^j.at n=14A269486