21077

Appears in sequences

• Number of factorization patterns of polynomials of degree n over integers.at n=21A006171
• Numbers whose base-2 representation has exactly 13 runs.at n=27A043580
• Number of binary words of length n containing at least one subword 10^{8}1 and no subwords 10^{i}1 with i<8.at n=52A143288
• Number of n X n binary arrays symmetric under horizontal reflection with all ones connected only in a 1001-1001-1111 pattern in any orientation.at n=11A147406
• Number of legal starting configurations in the glass worms (or vers de verres) game with n glasses.at n=7A151987
• a(1) = 1; thereafter a(n) is always the smallest integer > a(n-1) not leading to a contradiction, such that any five consecutive digits in the sequence sum up to a prime.at n=38A152605
• Number of partitions of (5, n) into a sum of distinct pairs.at n=21A268348
• Record values in permutation A267107.at n=13A268394
• Squares where A323809 gets stuck.at n=14A323813