25030

Appears in sequences

• Representation degeneracies for boson strings.at n=32A005294
• a(1) = 2; a(n+1) = a(n)-th composite.at n=40A022450
• Base-8 palindromes that start with 6.at n=25A043026
• Numbers that contain as proper substrings every maximal prime power dividing them.at n=15A059401
• Numbers n such that the average of prime(n) and prime(n+1) is a perfect cube.at n=8A076693
• a(n) = A063997(n)/4.at n=27A088406
• Number of non-equivalent ways to choose 4 points in an equilateral triangle grid of side n.at n=8A231653
• Number of simple chord diagrams with n chords, up to rotation.at n=7A278993
• Number of length n - 1 ordered set partitions of {1..n} where no element of any block is greater than any element of a non-adjacent consecutive block.at n=16A332724
• a(n) is the number of regions formed by n-secting the angles of a decagon.at n=39A335800
• Numbers k so that the binary expansion of 3^k starts with the binary expansion of k.at n=17A385157