26356

Appears in sequences

• Number of valleys strictly above the x-axis in all hill-free Dyck paths of semilength n (a hill in a Dyck path is a peak at level 1).at n=9A119012
• Numbers k for which 16*k+1, 16*k+3, 16*k+7, 16*k+13 and 16*k+15 are primes.at n=5A123990
• Number of base 14 circular n-digit numbers with adjacent digits differing by 9 or less.at n=4A125471
• a(n) = (n^5 - 5*n^4 + 5*n^3 + 5*n^2 + 114*n + 120)/120.at n=21A161701
• Expansion of Product_{1 <= i <= j <= k} 1/(1 - x^(i*j*k)).at n=30A321360