112912

Appears in sequences

• Numbers k such that the least term in the periodic part of the continued fraction for sqrt(k) is 42.at n=15A031720
• Number of permutations (p(1),p(2),...,p(n)) of (1,2,...,n) such that p(i)-i is in {-2,-1,3} for all i=1,...,n.at n=40A079999
• Numbers k such that k and k^2 use only the digits 1, 2, 4, 7 and 9.at n=19A136998
• a(n) = 256*n^2 + 16.at n=21A158574
• Let P1, P2, P3, P4 be consecutive primes, with P2 - P1 = P4 - P3 = 2. a(n) = (P1 + P2)/12 for the first occurrence of (P3 - P1)/6 = n.at n=9A329250