259891

Appears in sequences

• a(n) = Sum_{k=0..n} p(k) where p(k) = number of partitions of k (A000041).at n=41A000070
• Number of plane partitions of n with at most two rows.at n=32A000990
• Numbers k that are the products of two distinct primes such that 2*k-1, 4*k-3, 8*k-7, 16*k-15, 32*k-31, 64*k-63 and 128*k-127 are also products of two distinct primes.at n=27A177216
• The products k of two distinct primes such that 2*k-1, 4*k-3, 8*k-7, 16*k-15, 32*k-31, 64*k-63, 128*k-127 and 256*k-255 are also products of two distinct primes.at n=11A177217