88399domain: NAppears in sequencesStrong pseudoprimes to base 7.at n=19A020233Strong pseudoprimes to base 49.at n=31A020275a(n) = s(1)t(n) + s(2)t(n-1) + ... + s(k)t(n+1-k), where k = [ (n+1)/2 ], s = (Fibonacci numbers), t = (odd natural numbers).at n=30A024463Principal diagonal of the convolution array A213768.at n=15A213769