21262

Appears in sequences

• Numbers k such that 249*2^k+1 is prime.at n=49A032501
• Number of partitions that are "3-close" to being self-conjugate.at n=46A108962
• Number of base 22 n-digit numbers with adjacent digits differing by five or less.at n=4A126543
• Repeated set splitting, unlabeled elements. Repeated integer partitioning into two parts.at n=9A137732
• a(n) = Sum_{i=0..n} digsum_6(i)^4, where digsum_6(i) = A053827(i).at n=27A231675
• Number of (binary) max-heaps on n elements from the set {0,1} containing exactly eight 0's.at n=22A326509