52504

Appears in sequences

• Number of binary strings of length n with no substrings equal to 0001 or 0011.at n=19A164393
• Least number x such that x^n has n digits equal to k. Case k = 1.at n=31A285448
• Number of squarefree parts in the partitions of n into 8 parts.at n=47A309461
• Number of subsets of the first n nonzero triangular numbers whose sum is a nonzero triangular number.at n=20A377123