104592domain: NAppears in sequencesUnique prime factors of 2^n+1 are of the form kn+1. These are the values for k.at n=36A098268Number of n X 2 0,1 arrays indicating 2 X 2 subblocks of some larger (n+1) X 3 binary array having a sum of two, with rows and columns of the latter in lexicographically nondecreasing order.at n=14A227099