64436

Appears in sequences

• Number of 5-tuples of different integers from [ 1,n ] with no global factor.at n=25A015640
• a(n) = A030067(2^n - 1) for n >= 1, where A030067 is the semi-Fibonacci numbers.at n=7A129092
• Triangle T, read by rows, where column n of T = column 0 of T^(2^n) for n>0, such that column 0 (A129092) equals the row sums of the prior row, starting with T(0,0)=1.at n=36A129100
• Triangle T, read by rows, where row n (shifted left) of T equals row 0 of matrix power T^n for n>=0.at n=45A129104
• Numbers n such that 10^n - 53 is prime.at n=19A178430