A133718 Column 3 of array in A133713.

1, 13, 81, 325, 995, 2541, 5698, 11586, 21825, 38665, 65131, 105183, 163891, 247625, 364260, 523396, 736593, 1017621, 1382725, 1850905, 2444211, 3188053, 4111526, 5247750, 6634225, 8313201, 10332063, 12743731, 15607075

Offset: 2

Author

N. J. A. Sloane, Dec 30 2007

Keywords

• nonn

Programs

Maple

A133718 := proc(l)
        A133713(l,3) ;
end proc:
seq(A133718(l),l=2..30) ; # R. J. Mathar, Nov 23 2011