26975

Appears in sequences

• [ (3rd elementary symmetric function of 3,4,...,n+4)/(3+4+...+n+4) ].at n=24A024191
• Least k such that k*10^n-9, k*10^n-7, k*10^n-3 and k*10^n-1 are all prime.at n=11A064432
• Duplicate of A064432.at n=11A064972
• Number of n X n binary arrays symmetric about main diagonal with all ones connected only in a 110-111-011 pattern in any orientation.at n=10A146251
• Number of n X n binary arrays symmetric about the diagonal and under 90 degree rotation with all ones connected only in a 110-111-011 pattern in any orientation.at n=22A146253
• Number of n X n binary arrays symmetric about the diagonal and under 90 degree rotation with all ones connected only in a 110-111-011 pattern in any orientation.at n=23A146253
• Numbers k such that (86*10^k - 77)/9 is prime.at n=25A273783
• Expansion of (1/(1 - x)) * Sum_{k>=0} x^(2*k) / Product_{j=1..2*k} (1 - x^j).at n=33A304620