Tuesday, April 2, 2013

9866

9866 = 2 x 4933.

9866 has a representation as a sum of two squares: 9866 = 292 + 952.

9866 is the number of words of length 45 in a certain language (A005819).

9866 is the sum of the proper divisors of the number of partitions of 34 (A139055).

9866 is the number of 6 x 6 arrays of squares of integers, symmetric about both diagonal and antidiagonal with all rows summing to 26 (A156389 and A156485).


Source: On-Line Encyclopedia of Integer Sequences

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