303030

Appears in sequences

• Theta series of A*_14 lattice.at n=48A023926
• Triplets: base 10 representation is the juxtaposition of three identical strings.at n=29A074842
• Numbers n such that A244112(n) | n.at n=5A278440
• Positive numbers k such that the decimal expansions of k and 1/k have the same nonzero digits.at n=34A376089
• Integers k with at least one proper factorization for which the sum of the same fixed integer power >= 2 of the factors equals k.at n=35A380760