25296

Appears in sequences

• Heptagonal (or 7-gonal) pyramidal numbers: a(n) = n*(n+1)*(5*n-2)/6.at n=31A002413
• a(n) = floor( n*(n-1)*(n-2)*(n-3)/26 ).at n=30A011936
• Least non-partition into positive n-th powers.at n=10A027609
• Super-4 Numbers (4 * n^4 contains substring '4444' in its decimal expansion).at n=24A032744
• Number of partitions in parts not of the form 25k, 25k+1 or 25k-1. Also number of partitions with no part of size 1 and differences between parts at distance 11 are greater than 1.at n=48A036000
• a(n) = (n-3)*A006918(n-2)/2 for n >= 2, with a(0) = a(1) = 0.at n=34A038376
• Partial sums of A007585.at n=15A051797
• Numbers k that can be expressed as k = w+x = y*z with w*x = (y+z)^3 where w, x, y, and z are all positive integers.at n=22A057370
• Numbers k such that sigma(k) divides k^2.at n=22A090777
• Number of partitions of n^2 into squares providing no dissections of the square n X n into smaller squares.at n=15A092179
• Structured disdyakis dodecahedral numbers (vertex structure 9).at n=15A100161
• Numbers n for which the terms of the multiplicative sequence {n^2/A049417(n)} are integers.at n=27A185288
• Omit the initial 1 from A000141 and take the Mobius transform.at n=45A190622
• Numbers k with equal remainders of (product of divisors of k) mod (sum of divisors of k) and (product of proper divisors of k) mod (sum of proper divisors of k).at n=40A192035
• Places n such that the two remainders A187680(n) and A191906(n) are both zero.at n=15A192853
• The number of 2 X 2 matrices with no real eigenvalues and whose entries are integers of absolute value at most n.at n=7A207259
• Even heptagonal pyramidal numbers.at n=22A218325
• Sum of the middle parts in the partitions of 4n-1 into 3 parts.at n=25A240707
• a(n) = cpg(n, 3) * cpg(n, 4) * ... * cpg(n, n) where cpg(n, m) is the m-th n-th-order centered polygonal number.at n=5A257132
• Least positive integer k such that prime(k)-k, prime(k)+k, prime(k*n)-k*n, prime(k*n)+k*n, prime(k)+k*n and prime(k*n)+k are all prime.at n=25A259492