66203

Appears in sequences

• n-th 4k+1 prime times (n+1)st 4k+3 prime.at n=26A048628
• Expansion of x/((1 - x - x^4)*(1 - x)^5).at n=18A145134
• Least k such that 2^(2^k) = n (mod k).at n=27A155886
• Expansion of Product_{k>=1} (1 + x^k)^(k*(k+1)*(2*k+1)/6).at n=11A281156
• Number of nX3 0..1 arrays with every element equal to 0, 2, 3 or 4 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.at n=8A302362