262124

Appears in sequences

• a(n) = 2^n - n - 2.at n=16A000247
• If an array is made of columns of -nacci sequences (Fibonacci, tribonacci, etc.), all starting with 1,1,2,..., the NW-to-SE diagonals can be extended by computation. This sequence is diagonal 6. See A159741 for details.at n=13A159742
• Fibonacci 15-step numbers, a(n) = a(n-1) + a(n-2) + ... + a(n-15).at n=19A220493
• Decimal representation of the x-axis, from the left edge to the origin, of the n-th stage of growth of the two-dimensional cellular automaton defined by "Rule 315", based on the 5-celled von Neumann neighborhood.at n=17A281045
• Number of integer compositions of n whose parts are not in arithmetic progression.at n=19A389741