51775

Appears in sequences

• Numbers k such that k^6 == 1 (mod 7^5).at n=20A056103
• Number of n-celled polyominoes with exactly 3 holes.at n=17A089455
• Partial sums of the tricapped prism numbers A005920.at n=18A187673
• Number of lower triangular n X n arrays colored with integers 0 upwards introduced in row major order, with no element equal to any horizontal, vertical or antidiagonal neighbor, and containing the value n(n+1)/2-2.at n=24A211924
• a(n) is the number of 5 element sets of distinct integer-sided trapezoids whose base angles are 60 degrees that fill an equilateral triangular grid of side n units with a trapezoid filled by 3 trapezoids.at n=33A391204