24761

Appears in sequences

• Strong pseudoprimes to base 19.at n=20A020245
• 1/2 the number of n X n arrays of squares of integers with every 2X2 subblock summing to 20.at n=11A159221
• Sum of cubes of nonprime divisors of n.at n=27A279290
• Number of partitions of n with up to seven distinct kinds of 1.at n=25A320694
• a(n) = (1/2) * Sum_{k=0..floor(n/2)} 2^(n-2*k) * binomial(2*k+2,2*n-4*k+1).at n=16A387554