55320

Appears in sequences

• a(n) = a(n-1) + a(n-4), starting 1,1,1,3.at n=34A014101
• Triangle, read by rows, where T(n,k) is the coefficient of q^(nk-k) in the squared q-factorial of n.at n=37A129276
• Triangle, read by rows, where T(n,k) is the coefficient of q^(nk-k) in the squared q-factorial of n.at n=43A129276
• Column 1 of triangle A129276; a(n) is the coefficient of q^n in the squared q-factorial of n+1.at n=7A129277
• a(n) = 1728*n + 24.at n=31A157325
• Number T(n,k) of parity alternating permutations of [n] with exactly k descents from odd to even numbers; triangle T(n,k), n>=0, 0<=k<=max(0,floor((n-1)/2)), read by rows.at n=41A232187
• Numbers k such that k^2 +/- (k-1) and (k-1)*k^2 +/- 1 are all primes.at n=41A239326
• Growth series for affine Coxeter group (or affine Weyl group) D_5.at n=23A266760
• a(n) = (n - 1)*(4*n^2 - 8*n + 5).at n=24A317297
• a(n) = Sum_{k=0..n} binomial(n+k+2,n-k) * Fibonacci(k+1).at n=9A390824