22081

Appears in sequences

• Numbers k such that the period of the continued fraction for sqrt(k) contains exactly 92 ones.at n=13A031860
• Number of regions in an equilateral triangular figure formed by the straight line segments connecting all vertices and all points that divide the sides into n equal parts.at n=10A092867
• Number of n X n binary arrays symmetric about both diagonal and antidiagonal with all ones connected only in a 1001-1111-0100 pattern in any orientation.at n=16A146835
• Number of (n+4)X6 0..2 matrices with each 5X5 subblock idempotent.at n=3A224619
• Number of (n+4) X 8 0..2 matrices with each 5 X 5 subblock idempotent.at n=1A224621
• T(n,k)=Number of (n+4)X(k+4) 0..2 matrices with each 5X5 subblock idempotent.at n=11A224625
• T(n,k)=Number of (n+4)X(k+4) 0..2 matrices with each 5X5 subblock idempotent.at n=13A224625
• Numbers n such that there are a, b with abs(sigma(a) - sigma(b)) = sigma(n) - n and a U b = n, where U is decimal concatenation.at n=21A239563
• Fixed points in A375564.at n=27A376584