1666665

Appears in sequences

• a(n) = (8*n+1)*(8*n+3)*(8*n+5)*(8*n+7).at n=4A001546
• When squared gives number composed of digits {2, 5, 7}.at n=10A030487
• (10^n-1) * (n+9) / 9.at n=6A091692
• a(n) = (n^7 - n)/6.at n=10A108495
• a(n)*n = A112909(n).at n=5A112910
• Denominator of -16/((n+2)*n*(n-2)*(n-4)).at n=36A117465
• a(n) = 111111*n.at n=14A154549
• a(n) = (4*n+1)*(4*n+3)*(4*n+5)*(4*n+7).at n=8A154633
• Murai Chuzen numbers.at n=50A225488