20343
domain: N
Appears in sequences
- Number of partitions of n with equal number of parts congruent to each of 1 and 4 (mod 5).at n=51A035558
- 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, 0), (-1, 0, -1), (-1, 0, 0), (0, -1, 1), (1, 1, 0)}.at n=9A149172
- Numbers k such that A(k+1) = A(k) + 1, where A() = A005101() are the abundant numbers.at n=21A169822
- a(n) = 6*A142459(2*n, n)/(n+1).at n=2A172013
- Number of compositions of n in which the maximal multiplicity of parts equals 8.at n=11A243125
- Irregular triangle read by rows: coefficients of polynomials related to Stirling permutations.at n=52A256978
- Irregular triangle read by rows: coefficients of polynomials related to Stirling permutations.at n=60A256978
- Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 998", based on the 5-celled von Neumann neighborhood.at n=34A273857
- Prime time numbers on 6-digit clocks: numbers of the form HMMSS where H, MM, SS are primes, H < 24, MM and SS < 60.at n=30A295014
- Irregular triangle read by rows where T(n,k) is the number of labeled connected loop-graphs covering n vertices with k edges.at n=57A369195