3,1

Here, an average array is an array of positive integers such that each number (however not the smallest and the largest number) is the average of its horizontally vertically and diagonally adjacent numbers.

Table of n, a(n) for n=3..15.

Sequence in context: A252607 A210103 A191938 * A252923 A268245 A268102

Adjacent sequences: A195806 A195807 A195808 * A195810 A195811 A195812

nonn

Kausthub Gudipati, Sep 24 2011

approved