85611

Appears in sequences

• a(n) = a(1) + a(2) + ... + a(n-1) - a(m) for n >= 4, where m = 2*n - 2 - 2^(p+1) and p is the unique integer such that 2^p < n - 1 <= 2^(p+1), starting with a(1) = 1, a(2) = 3, and a(3) = 2.at n=19A049923
• Numbers k such that the k-th triangular number contains only digits {3,4,6}.at n=6A119185
• Number of base 19 n-digit numbers with adjacent digits differing by four or less.at n=5A126514
• Number of 3Xn 0..1 arrays with every 1 horizontally, diagonally or antidiagonally adjacent to 2 neighboring 1s.at n=13A297433