23697

Appears in sequences

• Number of winning length n strings with a 3-symbol alphabet in "same game".at n=11A035617
• Number of distinct pairs a < b with nonzero decimal digits such that a + b = 10^n.at n=4A117644
• a(0)=1, a(1)=0, a(2)=2, a(3)=1, a(n)=a(n-2)+a(n-3)+a(n-4) for n>3.at n=28A167704
• Constant term in the reduction of the polynomial 1+x+x^2+...+x^n by x^3->x^2+2x+1. See Comments.at n=16A192805
• Number of nonnegative integer arrays of length n+4 with new values 0 upwards introduced in order, no three adjacent elements equal, and containing the value n+1.at n=17A211837
• Sequence shifts left seven places under Weigh transform with a(n) = signum(n) for n<7.at n=41A316079