19837

Appears in sequences

• Numbers k such that sigma(k) = sigma(k+10).at n=24A015880
• Numbers k such that the period of the continued fraction for sqrt(k) contains exactly 86 ones.at n=22A031854
• Number of partitions of n into parts not of the form 19k, 19k+7 or 19k-7. Also number of partitions with at most 6 parts of size 1 and differences between parts at distance 8 are greater than 1.at n=38A035976
• Denominators of continued fraction convergents to sqrt(618).at n=6A042187
• Square array of binomial transforms of Fibonacci numbers, read by antidiagonals.at n=62A081576
• Expansion of 1/(1 - 7*x + 11*x^2).at n=6A099453
• Integers k such that A166100(k)/A005408(k) is not an integer.at n=31A166101
• Number of 4-step one space for components leftwards or up, two space for components rightwards or down asymmetric quasi-queen's tours (antidiagonal moves become knight moves) on an n X n board summed over all starting positions.at n=8A187859
• Number of (w,x,y,z) with all terms in {1,...,n} and w^2>=x*y*z.at n=19A212064
• Centered 12-gonal numbers which are semiprimes, intersection of A003154 and A001358.at n=23A218172