18219

Appears in sequences

• Integers k such that 0 < |k^5 - m^2| <= k^(3/2) for some integer m.at n=11A116884
• Expansion of 1/(1 - x^3 - x^4 + x^7 - x^10 - x^11 + x^14) (a Salem polynomial).at n=61A143644
• Number of permutations of 1..n containing the relative rank sequence { 236145 } at any spacing.at n=3A159148
• Values x for record minima of the positive distance d between the square of an integer y and the fifth power of a positive integer x such that d = y^2 - x^5 (x <> k^2 and y <> k^5).at n=20A198444
• Number of representations of n as a sum of products of pairs of positive integers, n = Sum_{k=1..m} i_k*j_k with i_k<=j_k, i_k<=i_{k+1}, j_k<=j_{k+1}, i_k*j_k<=i_{k+1}*j_{k+1}.at n=34A212214
• Number of n X 3 0..2 arrays with horizontal differences mod 3 never 1, vertical differences mod 3 never -1, rows lexicographically nondecreasing, and columns lexicographically nonincreasing.at n=10A229423
• Numbers of undirected cycles in the 2n-crossed prism graph.at n=6A234617