22393

Appears in sequences

• 1 + Sum_{n>=1} a_n x^n = Product_{n>=1} (1-x^n)^prime(n).at n=31A007441
• a(n) = dot_product(1,2,...,n)*(5,6,...,n,1,2,3,4).at n=37A026043
• Numbers n whose sum of divisors and number of divisors are both triangular numbers.at n=41A070996
• Row sums of the triangle described in A082200.at n=25A082203
• Difference between squares of legs of primitive Pythagorean triangles, sorted (with multiplicity).at n=37A127923
• Primitive numbers in A158235.at n=26A158245
• Number of (n+1) X (n+1) 0..2 arrays with the maximum plus the upper median minus the lower median minus the minimum of every 2 X 2 subblock equal.at n=2A236885
• Number of (n+1) X (3+1) 0..2 arrays with the maximum plus the upper median minus the lower median minus the minimum of every 2 X 2 subblock equal.at n=2A236888
• T(n,k)=Number of (n+1)X(k+1) 0..2 arrays with the maximum plus the upper median minus the lower median minus the minimum of every 2X2 subblock equal.at n=12A236893
• a(0) = 0. Successive terms are double the previous, then with their digits incremented by 1.at n=10A337016
• Number of n-color complete compositions of n.at n=14A374727