124618

Appears in sequences

• a(n) = s(n+3)/3, where s(n) = A024725(n).at n=18A024726
• Number of ways of pairing the odd squares of the numbers 1 to n with the even squares of the numbers n+1 to 2n such that each pair sums to a prime.at n=29A077763
• Base-10 pseudo-altruistic numbers.at n=30A157714
• Expansion of Product_{k>=1} (1 + x^k/(1 + x)).at n=45A307602