19499

Appears in sequences

• "DFK" (bracelet, size, unlabeled) transform of 2,1,1,1...at n=34A032215
• Number of partitions of n with equal number of parts congruent to each of 2 and 3 (mod 4).at n=48A035545
• a(n) = least k such that the remainder when 16^k is divided by k is n.at n=32A128156
• Least k such that the cyclotomic polynomial Phi(k,x) contains n or -n as a coefficient, where k is restricted to be the product of 3 distinct prime numbers.at n=6A134518
• 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, -1), (-1, -1, 1), (-1, 0, 1), (0, 1, 0), (1, -1, 0)}.at n=11A148121
• Number of 2 X 2 matrices having all terms in {1,...,n} and nonnegative determinant.at n=13A211058
• Number of nX2 0..1 arrays with every element unequal to 1, 2, 4 or 5 king-move adjacent elements, with upper left element zero.at n=10A304052
• Expansion of e.g.f. exp( -LambertW(-arcsin(x)) ).at n=6A385424
• Smallest k such that the sums of digits of k and k^2 in base 10 are both divisible by n or a(n) = -1 if no such k exists.at n=15A389000