87980

Appears in sequences

• Triangle T(n,k) read by rows giving number of fixed 4 X k polyominoes with n cells (n >= 4, 1<=k<=n-3).at n=50A059680
• Expansion of 1/(1-x-x^2-x^6).at n=23A120400
• Numbers k such that k and k^2 use only the digits 0, 4, 7, 8 and 9.at n=31A136959
• Expansion of 1/(1 -x -x^2 -x^6 -x^24 - ... -x^(k!) - ... ).at n=23A217283
• Number of nX5 0..1 arrays with every element equal to 3, 5, 6, 7 or 8 king-move adjacent elements, with upper left element zero.at n=12A298960