55390

Appears in sequences

• Expansion of Product_{k>=1} (1 - k*x^k) / (1 + x^k).at n=39A269339
• Numbers k such that (178*10^k - 7)/9 is prime.at n=21A290955
• Number of n X n 0..1 arrays with every element equal to 1, 2, 3, 5, 6 or 7 king-move adjacent elements, with upper left element zero.at n=4A299302
• Number of nX5 0..1 arrays with every element equal to 1, 2, 3, 5, 6 or 7 king-move adjacent elements, with upper left element zero.at n=4A299304
• T(n,k)=Number of nXk 0..1 arrays with every element equal to 1, 2, 3, 5, 6 or 7 king-move adjacent elements, with upper left element zero.at n=40A299307
• Numbers m such that abs(K(m+1) - K(m)) = 2, and both m and m+1 are squarefree (A005117), where K(m) = A002034(m) is the Kempner function.at n=18A346212