2352980

Appears in sequences

• Triangle whose (i,j)-th entry is binomial(i,j)*7^(i-j)*7^j.at n=24A038273
• Triangle read by rows: terms T(n,k) of a binomial decomposition of n as Sum(k=0..n)T(n,k).at n=32A244143
• a(n) is the permanent of the symmetric n X n matrix M_n where M_n(j,k) = n for j = k, M_n(j,n) = n-j, M_n(n,k) = n-k, M_n(j,k) = 0 otherwise.at n=7A386974