36594

Appears in sequences

• Octahedral numbers: a(n) = n*(2*n^2 + 1)/3.at n=38A005900
• Theta series of P_{9a} packing.at n=16A005951
• Numbers n such that d(n + d(n)) = d(n), where d(n) is the sum of the distinct primes dividing n.at n=33A175760
• Triangle read by rows: T(n,k) is the number of dispersed Dyck paths of semilength n having k peak plateaux.at n=57A191399
• Number of (n+1) X (n+1) -2..2 symmetric matrices with every 2 X 2 subblock having sum zero and two, three or four distinct values.at n=9A211117
• Number of ways to write n as an ordered sum of 9 prime powers (including 1).at n=10A341138
• Partial sums of the even triangular numbers (A014494).at n=37A352115