69629

Appears in sequences

• Numbers k such that k | 6^k + 1.at n=16A015953
• Numbers k such that k | 13^k + 1.at n=36A015963
• Number of n X n binary arrays symmetric under 90 degree rotation with all ones connected only in a 110-111-010 pattern in any orientation.at n=14A146246
• a(n) = 2*a(n-1) + 3 for n>1, a(1)=14.at n=12A156203
• Positive numbers y such that y^2 is of the form x^2+(x+2401)^2 with integer x.at n=22A157247
• 1/16 the number of n X n arrays of squares of integers with every 2X2 subblock summing to 30.at n=10A159229
• Number of length 6 nonnegative integer arrays starting and ending with 0 with adjacent elements differing by no more than n.at n=12A204214
• a(n) = (sqrt(7)*csc(Pi/7)/2)^n + (-sqrt(7)*csc(2*Pi/7)/2)^n + (-sqrt(7)*csc(4*Pi/7)/2)^n.at n=10A275831
• Expansion of Product_{k>=0} (1 + x^(4*k+1))^(4*k+1).at n=48A285288