66996

Appears in sequences

• Exponential reversion of sequence of involutions (A000085).at n=6A050398
• 5-almost primes with semiprime digits (digits 4, 6, 9 only).at n=25A111697
• Number of permutations of length n avoiding each length 5 pattern p with p(1)=5 and (p(5)=4 or p(4)=4).at n=9A178594
• Number of 4-step one space leftwards or up, two space rightwards or down asymmetric rook's tours on an n X n board summed over all starting positions.at n=35A187299
• Number of 2n-bead necklaces labeled with numbers 1..7 not allowing reversal, with neighbors differing by exactly 1.at n=10A208726
• Numbers with digits 6 and 9 only.at n=36A284636