123512

Appears in sequences

• Numbers k such that k and k^2 use only the digits 1, 2, 3, 4 and 5.at n=33A136968
• Number of nondecreasing arrangements of 7 nonzero numbers in -(n+5)..(n+5) with sum zero.at n=9A188337
• Numbers k such that the decimal expansions of both k and k^2 have 1 as smallest digit and 5 as largest digit.at n=10A256889
• a(n) is the multiplicative inverse of A008514(n) modulo A008514(n+1).at n=18A334121