27204

Appears in sequences

• Pisot sequence L(6,7).at n=24A048585
• Pisot sequence L(7,9).at n=23A048589
• Fibonacci sequence beginning 13, 9.at n=17A206609
• Number of n X n 0..2 symmetric matrices with every element equal to zero, one or four horizontal and vertical neighbors, and new values 0..2 introduced in lower triangle row major order.at n=4A210905
• Number of ordered triples (w,x,y) with all terms in {-n,...-1,1,...,n} and w+2x+3y>0.at n=19A211621
• Number of n X 3 integer arrays with each element equal to the number of horizontal and vertical neighbors differing from itself by exactly one.at n=27A266076