28253

Appears in sequences

• a(n) = Sum_{k=0..n} T(n,k) * T(n,2n-k), with T given by A027052.at n=9A027073
• The first n digits of the juxtaposition of the base-2 numbers converted to decimal.at n=14A055143
• Interprimes which are of the form s*prime, s=19.at n=7A075294
• Smallest k such that both k-n and k+n are primes and there are no primes between them.at n=24A087378
• Numbers k such that the digit sum of 167^k is divisible by k.at n=42A175552
• Number of -2..2 arrays x(i) of n+1 elements i=1..n+1 with x(i)+x(j), x(i+1)+x(j+1), -(x(i)+x(j+1)), and -(x(i+1)+x(j)) having one, two or three distinct values for every i<=n and j<=n.at n=8A211462
• Number of partitions of n into distinct parts with boundary size 8.at n=40A227565
• Sum of the largest parts of the partitions of n into 8 squarefree parts.at n=49A326452
• Number of rucksack partitions of n: every consecutive constant subsequence has a different sum.at n=50A353864