75363

Appears in sequences

• Number of permutations of length n which avoid the patterns 1234, 2341, 3421.at n=12A116818
• Number of n X n binary arrays symmetric under horizontal reflection with all ones connected only in a 0100-0100-1111-0010-0010 pattern in any orientation.at n=15A147339
• Coefficients in level 17 Ramanujan-Sato series for 1/Pi.at n=5A386283