220110

Appears in sequences

• Integers which have more than one coprime factorization into nonprime powers which sum to the same number.at n=26A072940
• Number of zig-zag paths from top to bottom of a rectangle of width 12 with n rows.at n=15A153361
• Length of n-th iterate of the mapping 00->0010, 01->010, 10->000, starting with 00.at n=20A289019
• Sum of those numbers t which have a unique representation as the sum of floor(n/2) distinct squares from among 1^2,...,n^2.at n=21A374510
• Products of 6 distinct primes that are sandwiched between semiprime numbers.at n=23A378627