1174405120

Appears in sequences

• a(n) is the number of occurrences of 7's in the palindromic compositions of 2*n-1, or also, the number of occurrences of 8's in the palindromic compositions of 2*n.at n=25A079861
• a(n) = 2^n*(n^2 - n + 8)/8.at n=24A081908
• Number of permutations of 7 indistinguishable copies of 1..n arranged in a circle with exactly 1 local maximum.at n=8A159738
• The second left hand column of triangle A167591.at n=19A167592
• Triangle read by rows, T(n,k) = k^n*A056040(n), n>=0, 0<=k<=n.at n=44A195009