Number of n X n symmetric 0..6 arrays with rows, considered as 7-ary numbers, in nondecreasing order.

A162082

Number of n X n symmetric 0..6 arrays with rows, considered as 7-ary numbers, in nondecreasing order.

Terms

    a(0) =7a(1) =175a(2) =21007a(3) =13482511a(4) =48700256143

External references