81139

Appears in sequences

• Number of pairs (p,q) of partitions of n into distinct parts such that p majorizes q in the dominance order.at n=33A265506
• Numbers k such that prime(k), prime(k+1), prime(k+2), prime(k+3) and prime(k+4) all have the same last digit.at n=20A371390
• a(n) = denominator(b(n)), where b(n) = b(n-1) + n if n is odd and b(n-1)*n/(b(n-1) + n) if n is even, with b(0) = 0.at n=12A392571
• a(n) = denominator(b(n)), where b(n) = b(n-1) + n if n is odd and b(n-1)*n/(b(n-1) + n) if n is even, with b(0) = 0.at n=13A392571