-1455

Appears in sequences

• Expansion of tan(log(1+x)*cosh(x)).at n=6A009650
• The r-th term of the n-th row of the following array contains the sum of r successively decreasing integers beginning from n. 0 < r <= n. Sequence contains the leading diagonal.at n=14A110427
• a(n) = a(n - 1) - 2*a(n - 2) + a(n - 3) - 2*a(n - 4) + a(n - 5).at n=30A122582
• Triangle read by rows: T(n,k), 0 <= k <= n, gives the coefficients of the Charlier polynomials (with parameter a=1), ordered by rising powers.at n=32A137338
• Expansion of 1/(1-x*(1-8*x)).at n=7A145978
• Triangle T(n, k, q) = q^k*Q(k, n, q), with T(0, 0, q) = -2, where Q(k, n, q) = (1/q)*( -Q(k-1, n, q) + (1+q)*p(q, k-1)^n), Q(k, 0, q) = -q*(1+q)^n, p(q, n) = Product_{j=1..n} ( (1-q^k)/(1-q) ), and q = 2, read by rows.at n=23A156222
• a(n) = 3 - 2*3^n.at n=6A165746
• A symmetrical triangle sequence: T(n, k) = q^k + q^(n-k) - q^n, with q=3.at n=29A176225
• A symmetrical triangle sequence: T(n, k) = q^k + q^(n-k) - q^n, with q=3.at n=34A176225
• Floor(r*a(n-1)) - floor(r*a(n-2)), where r = 3/2, a(0) = 1, a(1) = 1.at n=39A275865