53618
domain: N
Appears in sequences
- a(n) = 81*n^2 - 44*n + 6.at n=26A156676
- Number of arrangements of 3 nonzero numbers x(i) in -n..n with the sum of div(x(i),x(i+1)), where div(a,b)=a/b produces the integer quotient implying a nonnegative remainder, equal to zero.at n=37A190072
- Number of subsets of the first n nonzero n-gonal numbers whose sum is a nonzero n-gonal number.at n=24A379337