21185

Appears in sequences

• Numbers such that the sum of the factorials of the digits of the fourth power is a square.at n=31A126077
• Number of walks within N^3 (the first octant of Z^3) starting at (0,0,0) and consisting of n steps taken from {(-1, -1, 1), (-1, 1, -1), (0, 0, 1), (1, 0, 0)}.at n=10A149812
• Number of binary strings of length n with no substrings equal to 000, 010, or 111.at n=45A164317
• Records in A096335 (values).at n=36A221181
• Number of n X n 0..1 arrays with each 1 horizontally or vertically adjacent to 1 or 3 1's.at n=4A295090
• Number of nX5 0..1 arrays with each 1 horizontally or vertically adjacent to 1 or 3 1s.at n=4A295094
• T(n,k)=Number of nXk 0..1 arrays with each 1 horizontally or vertically adjacent to 1 or 3 1s.at n=40A295097
• Number of n X 2 0..1 arrays with every element equal to 1, 3, 4 or 6 king-move adjacent elements, with upper left element zero.at n=12A298057
• Number of ternary length-2 squarefree words of length n not containing the subwords 021 or 10.at n=23A373554