37344domain: NAppears in sequencesa(0)=1; a(n) = sigma_1(n) + sigma_3(n).at n=33A092345Integers n such that 10^n-59 is prime.at n=20A108506Binary order of n plus number of partitions of n-1.at n=40A163295Number of nondecreasing sequences of n 1..n+1 integers with no element dividing the sequence sum.at n=9A212869