87291

Appears in sequences

• Zeroless numbers n whose digit product squared is equal to the digit product of n^2.at n=33A256115
• Odd numbers n such that q(n)^2 = q(n^2) != 0, where q(n) is the digit product on base 10.at n=17A278316
• Number T(n,k) of linear chord diagrams having n chords and minimal chord length k (or k=0 if n=0); triangle T(n,k), n>=0, 0<=k<=n, read by rows.at n=29A293881
• Number of linear chord diagrams having n chords and minimal chord length one.at n=6A293914