OFFSET
2,2
COMMENTS
Aside from the third value, the sequence is the same as A251738.
EXAMPLE
For n = 3,
3 * sum(i=0..1, binomial(1,i) mod 2) = 3 * (1 + 1) = 6 > 2^1,
3 * sum(i=0..2, binomial(2,i) mod 2) = 3 * (1 + 0 + 1) = 6 > 2^2,
3 * sum(i=0..3, binomial(3,i) mod 2) = 3 * (1 + 1 + 1 + 1) = 12 > 2^3,
3 * sum(i=0..4, binomial(4,i) mod 2) = 3 * (1 + 0 + 0 + 0 + 1) = 6 <= 2^4,
so A251739(3) = 4.
CROSSREFS
KEYWORD
nonn
AUTHOR
Jens Voß, Dec 07 2014
STATUS
approved