19731

Appears in sequences

• Expansion of 1/((1-x)*(1-2*x)*(1-5*x)*(1-9*x)).at n=4A021134
• Hankel transform of number of divisors sequence (A000005).at n=24A056225
• Coefficients in the series (1 + x - 4x^4 - 6x^6 - 8x^8 - 9x^9 - 10x^10 - 12x^12 - 14x^14 - ... )/(1 - 2x^2 - 3x^3 - 5x^5 - 7x^7 - 11x^11 - 13x^13 - ... ).at n=15A058357
• Triangle read by rows: T(n,k) is number of paths from (0,0) to (3n,0) that stay in the first quadrant (but may touch the horizontal axis), consisting of steps u=(2,1), U=(1,2), or d=(1,-1) and having k U=(1,2) steps among the steps leading to the first d step.at n=31A108441
• Number of elements in the continued fraction for Sum_{k=0..n} 1/(1+2^(2^k)).at n=14A159243
• Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 513", based on the 5-celled von Neumann neighborhood.at n=26A272703
• Number of subsets of {1..n} containing n such that some element can be written as a positive linear combination of the others.at n=48A365042