40003

Appears in sequences

• Numbers k such that the period of the continued fraction for sqrt(k) contains exactly 31 ones.at n=17A031799
• Numbers n with property that n is a substring of its base 5 representation.at n=23A038105
• A Langford-like sequence.at n=44A108401
• Triangle T(n, k, m) = coefficients of p(x, n, m) where p(x,n,m) = (x+1)*p(x, n-1, m) + (2^(m+n-1) + 2^(n-2)*[n>=3])*x*p(x, n-2, m) and m=0, read by rows.at n=31A154983
• Triangle T(n, k, m) = coefficients of p(x, n, m) where p(x,n,m) = (x+1)*p(x, n-1, m) + (2^(m+n-1) + 2^(n-2)*[n>=3])*x*p(x, n-2, m) and m=0, read by rows.at n=32A154983
• Numbers that can be written in at least 3 ways as the sum of a Lucas number (A000032) and a square.at n=13A362528