23506

Appears in sequences

• Numbers k in which the digits of k^2 appear.at n=33A029774
• Numbers k such that k and k^2 have the same set of digits.at n=15A029793
• a(n) is the smallest value of m such that A002378(m), the m-th oblong number, contains exactly n 5's.at n=5A048539
• Row sums of triangle A097179, in which the n-th row polynomial R_n(y) is formed from the initial (n+1) terms of g.f. A077860(y)^(n+1), where R_n(1/2) = 4^n for all n>=0.at n=5A097180
• Partial sums of A100119. Sum of first n of the n-th centered n-gonal numbers.at n=20A130218
• Numbers k such that k and k^2 use only the digits 0, 2, 3, 5 and 6.at n=44A136888
• Number of n X n arrays of the minimum value of corresponding elements and their horizontal or antidiagonal neighbors in a random, but sorted with lexicographically nondecreasing rows and nonincreasing columns, 0..3 n X n array.at n=3A219707
• Number of n X 4 arrays of the minimum value of corresponding elements and their horizontal or antidiagonal neighbors in a random, but sorted with lexicographically nondecreasing rows and nonincreasing columns, 0..3 n X 4 array.at n=3A219710
• T(n,k)=Number of nXk arrays of the minimum value of corresponding elements and their horizontal or antidiagonal neighbors in a random, but sorted with lexicographically nondecreasing rows and nonincreasing columns, 0..3 nXk array.at n=24A219714
• Number of 4Xn arrays of the minimum value of corresponding elements and their horizontal or antidiagonal neighbors in a random, but sorted with lexicographically nondecreasing rows and nonincreasing columns, 0..3 4Xn array.at n=3A219717
• Glaisher's chi_12(n).at n=4A247067
• Numbers n such that both n and n squared contain exactly the same digits, and n is not divisible by 10.at n=8A258231
• Numbers that can be written in exactly three different ways as s_1^x_1 + ... + s_t^x_t, with 1 < s_1 < ... < s_t and {s_1,..., s_t} = {x_1,..., x_t} for some t > 0.at n=0A386967
• a(n) is the least number that can be written in exactly n ways as s_1^x_1 + ... + s_t^x_t, with 1 < s_1 < ... < s_t and {s_1,..., s_t} = {x_1,..., x_t}.at n=2A387100
• Numbers that can be written in exactly two different ways in the form described by A387302.at n=8A387898