20914

Appears in sequences

• Numbers whose base-12 representation has exactly 5 runs.at n=20A043654
• Number of (n+2)X(1+2) 0..3 arrays with every 3X3 subblock row and column sum not 2 3 6 or 7 and every diagonal and antidiagonal sum 2 3 6 or 7.at n=15A251887
• Maximal coefficient of (1 - x) * (1 - x^4) * (1 - x^9) * ... * (1 - x^(n^2)).at n=50A369728
• Antidiagonal-sums of absolute value of the array A377038(n,k) = n-th term of k-th differences of squarefree numbers (A005117).at n=17A377040
• G.f.: Sum_{k>=0} x^k * Product_{j=1..4*k} (1 + x^j).at n=52A385068