49010

Appears in sequences

• Generating function = Product_{m>=1} 1/(1 - x^m)^2; a(n) = number of partitions of n into parts of 2 kinds.at n=22A000712
• Least k such that first k terms of A022303 contain n more 2's than 1's.at n=27A025518
• Number of consecutive prime runs of 2 primes congruent to 3 mod 4 below 10^n.at n=6A092640
• Number of partitions of 2*n into parts of two kinds.at n=11A100534
• Beach-Williams Pell numbers of type 2pqrs (p,q,r,s primes).at n=3A212077
• Numbers which are the sum of two squared primes in exactly three ways (ignoring order).at n=20A226562