149952

Appears in sequences

• Number of ordered quadruples of integers from [ 1..n ] with no global factor.at n=42A015634
• Larger member of an infinitary amicable pair.at n=25A126170
• Number of 0..n arrays of length 7 with each element differing from at least one neighbor by 1 or less, starting with 0.at n=31A221686
• Larger of tri-unitary amicable numbers pair: numbers (m, n) such that tsigma(m) = tsigma(n) = m + n, where tsigma(n) is the sum of the tri-unitary divisors of n (A324706).at n=18A324709