247475

Appears in sequences

• Subdiagonal partitions: number of partitions (p1, p2, p3, ...) of n with pi <= i.at n=56A238875
• Number x such that usigma(x) = (-1)sigma(x), where usigma(x) is the sum of unitary divisors of x (A034448) and (-1)sigma(x) is defined in A049060 .at n=11A258101
• Number of nX3 0..1 arrays with every element equal to 0, 3, 4, 5, 7 or 8 king-move adjacent elements, with upper left element zero.at n=16A299576
• Numbers k such that A001414(k+1) = A001414(k)+1 and A001414(k)^2+3*A001414(k)+1 is prime.at n=29A352581