A058967 If n < 8 then A058966(n), else n*2^(n - 3) - 2*n - 50.

1, 2, 10, 30, 78, 190, 508, 1210, 2744, 6070, 13236, 28594, 61360, 130990, 278444, 589738, 1245096, 2621350, 5504932, 11534242, 24117152, 50331550, 104857500, 218103706, 452984728, 939523990, 1946156948, 4026531730, 8321499024

Offset: 3

Author

N. J. A. Sloane, Jan 14 2001

Keywords

• nonn

References

• B. Elspas, The theory of multirail cascades, in A. Mukhopadhyay, ed., Recent Developments in Switching Theory, Ac. Press, 1971, Chap. 8, see esp. p. 362 (S_2(n)).

Programs

Mathematica

Table[Which[n==3,1,n<8,n*2^(n-3)-2^(n-2)-2,True,n*2^(n-3)-2n-50],{n,3,40}] (* Harvey P. Dale, Mar 08 2018 *)