64476

Appears in sequences

• Number of incongruent ways to tile a 5 X 2n room with 1x2 Tatami mats. At most 3 Tatami mats may meet at a point.at n=44A068930
• Numbers k such that k and k^2 use only the digits 1, 4, 5, 6 and 7.at n=8A137046
• Number of distinct values of the sum of 2 products of three 0..n integers.at n=34A225259
• a(n) is the smallest k such that uphi(k*n) = uphi(k*n+1), or 0 if no such k exists.at n=58A291530