277222

Appears in sequences

• Number of nondecreasing arrangements of n+2 numbers in 0..6 with each number being the sum mod 7 of two others.at n=18A183909
• Number of 2 X n 0..1 arrays with the number of 1's horizontally, diagonally or antidiagonally adjacent to some 0 equal to the number of 0's adjacent to some 1, with top left element zero.at n=10A284335