37468domain: NAppears in sequencesa(n) = (F(2n+3) - F(n))/2 where F() = Fibonacci numbers A000045.at n=11A027994Numbers k such that 267*2^k-1 is prime.at n=39A050892A Fibonacci convolution.at n=12A164267Least k with precisely n partitions k = x + y satisfying sigma(k) = sigma(x) + sigma(y).at n=19A211224