a(n) is the denominator of the resistance R(n) = A338401(n)/a(n) of a triangular network of 3*n*(n+1)/2 one Ohm resistors in a hexagonal lattice arrangement.

A338402

a(n) is the denominator of the resistance R(n) = A338401(n)/a(n) of a triangular network of 3*n*(n+1)/2 one Ohm resistors in a hexagonal lattice arrangement.

Terms

    a(0) =3a(1) =9a(2) =7a(3) =123a(4) =1773a(5) =21075a(6) =68761a(7) =4989753a(8) =178945525a(9) =396450465051

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