23441

Appears in sequences

• Strong pseudoprimes to base 85.at n=15A020311
• a(n) = least k such that the remainder of 13^k divided by k is n.at n=23A127821
• Number of n X n binary arrays symmetric about both diagonal and antidiagonal with all ones connected only in a 11100-00100-00111 pattern in any orientation.at n=18A147251
• 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, 0, 0), (0, -1, 0), (0, 1, -1), (1, 1, -1), (1, 1, 1)}.at n=8A149763
• a(n) = n*(4*n^2 - 3*n + 5)/6.at n=32A174723
• Number of partitions p of n such that (number of numbers in p of form 3k+1) > (number of numbers in p of form 3k+2).at n=42A241739
• Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 630", based on the 5-celled von Neumann neighborhood.at n=36A269543
• Expansion of e.g.f. 1/(exp(-x) - 2*x).at n=5A368236