31204

Appears in sequences

• Numbers k such that 3^k + 3^4 + 1 is prime.at n=25A168170
• Number of (n+2)X3 binary arrays with no 3X3 subblock commuting with any horizontal or vertical neighbor 3X3 subblock.at n=2A186798
• Number of (n+2)X5 binary arrays with no 3X3 subblock commuting with any horizontal or vertical neighbor 3X3 subblock.at n=0A186800
• T(n,k)=Number of (n+2)X(k+2) binary arrays with no 3X3 subblock commuting with any horizontal or vertical neighbor 3X3 subblock.at n=3A186806
• T(n,k)=Number of (n+2)X(k+2) binary arrays with no 3X3 subblock commuting with any horizontal or vertical neighbor 3X3 subblock.at n=5A186806
• a(n) = 4*(5*n^2 - 5*n + 1).at n=39A193448
• Numbers whose digits are a permutation of [0,...,n] and which contain the product of any two adjacent digits as a substring.at n=24A203569
• In base 5, numbers n which have 5 distinct digits, do not start with 0, and have property that the product (written in base 5) of any two adjacent digits is a substring of n.at n=10A210016
• Number of strict partitions of 2n having an ordering of the parts in which no two neighboring parts have the same parity.at n=39A239882
• Number of length 3+3 0..n arrays with every four consecutive terms having the sum of some three elements equal to three times the fourth.at n=18A248540
• Number of triangles in the graph formed by drawing the lines connecting any two of the 2*(n+2) perimeter points of a 3 X (n+1) rectangular grid of points (or equally, a 2 X n grid of squares).at n=21A332606