20871

Appears in sequences

• Number of (n+1)X(n+1) 0..2 arrays containing all values 0..2 with every 2X2 subblock having two distinct values, and new values 0..2 introduced in row major order.at n=2A210044
• Number of (n+1)X4 0..2 arrays containing all values 0..2 with every 2X2 subblock having two distinct values, and new values 0..2 introduced in row major order.at n=2A210047
• T(n,k)=Number of (n+1)X(k+1) 0..2 arrays containing all values 0..2 with every 2X2 subblock having two distinct values, and new values 0..2 introduced in row major order.at n=12A210052
• Numbers k such that k and k+1 are both of the form p*q^3 where p and q are distinct primes.at n=19A215173
• Location (x,y) of the first n x n square of composite Gaussian integers in the first quadrant.at n=30A225073
• Location x of the first n x n square of composite Gaussian integers in the first quadrant.at n=15A225074
• Triangle, read by rows, that transforms diagonals in the table of coefficients in the successive iterations of g.f. of A236960 such that column 0 equals T(n,0) = n^n.at n=50A236961
• Number of (n+1) X (4+1) 0..1 arrays with every 2 X 2 subblock antidiagonal maximum minus diagonal minimum nondecreasing horizontally and diagonal maximum minus antidiagonal minimum nondecreasing vertically.at n=27A253393
• Number of nX2 0..1 arrays with every element equal to 0, 2 or 3 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.at n=13A300374
• Number of partitions of n with up to two distinct kinds of 1.at n=40A320689
• Numbers k such that A307437(k) is divisible by 3.at n=37A342037