560966domain: NAppears in sequencesa(1)=0; for i>=1, a(i+1)=position of first occurrence of a(i) in decimal expansion of 1/e.at n=16A0983200-additive sequence: a(n) is the smallest number larger than a(n-1) that is not the sum of any subset of earlier terms, starting with initial values {2, 5}.at n=24A244749