OFFSET
3,2
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)).
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 *)
CROSSREFS
KEYWORD
nonn
AUTHOR
N. J. A. Sloane, Jan 14 2001
STATUS
approved