19796

Appears in sequences

• a(n) = a(n-1) + a(n-7), with a(i) = 1 for i = 0..6.at n=47A005709
• Expansion of 1/(1 - x^7 - x^8 - ...).at n=54A017901
• Numbers n such that n | 7^n + 5^n + 3^n +1.at n=26A057830
• Transform of A059502 applied to sequence 2,3,4,...at n=9A059505
• G.f. satisfies: A(x) = 1/(1 + x*A(x^7)) and also the continued fraction: 1 + x*A(x^8) = [1; 1/x, 1/x^7, 1/x^49, 1/x^343, ..., 1/x^(7^(n-1)), ...].at n=48A101917
• Number of walks within N^3 (the first octant of Z^3) starting at (0,0,0) and consisting of n steps taken from {(-1, -1, -1), (-1, -1, 1), (0, 0, -1), (0, 1, 1), (1, 0, 1)}.at n=8A150184
• Number of all solid standard Young tableaux of shape [[n,k],[n-k]] for 0<=k<=n.at n=6A215002
• G.f. = b(2)^2*b(4)/(x^5+x^4-x^3-x^2-x+1), where b(k) = (1-x^k)/(1-x).at n=17A266339
• Expansion of cosh(7*arctanh(2*sqrt(x))).at n=3A285045
• Number of n X 3 0..1 arrays with each 1 adjacent to 1 or 4 king-move neighboring 1s.at n=8A296014
• T(n,k)=Number of nXk 0..1 arrays with each 1 adjacent to 1 or 4 king-move neighboring 1s.at n=57A296019
• Number of compositions of 7*n-2 into parts 1 and 7.at n=6A373928