39560

Appears in sequences

• Reversion of g.f. for Fibonacci numbers 1, 1, 2, 3, 5, ....at n=18A007440
• Numbers k such that sigma(k) = sigma(k+10).at n=36A015880
• Convolution of natural numbers >= 2 and (F(2), F(3), F(4), ...).at n=17A023550
• G.f. A(x) satisfies: 2^n - 1 = Sum_{k=0..n} [x^k]A(x)^n and also satisfies: (2+z)^n - (1+z)^n + z^n = Sum_{k=0..n} [x^k](A(x)+z*x)^n for all z, where [x^k]A(x)^n denotes the coefficient of x^k in A(x)^n.at n=20A100223
• Phi(A033631(n)) {phi is the Euler totient function A000010}.at n=18A115620
• Triangle T(n, k) = (m*(n-k) + 1)*T(n-1, k-1) + (m*(k-1) + 1)*T(n-1, k) + j*T(n-2, k-1), where T(n, 1) = T(n, n) = 1, m = 1, and j = 4, read by rows.at n=38A144436
• Triangle T(n, k) = (m*(n-k) + 1)*T(n-1, k-1) + (m*(k-1) + 1)*T(n-1, k) + j*T(n-2, k-1), where T(n, 1) = T(n, n) = 1, m = 1, and j = 4, read by rows.at n=42A144436
• a(-1) = 1 and g.f. A(x) satisfies A(x) - 1/A(x) = 1/x - 1.at n=20A214649
• Denominators of coefficients in asymptotic expansion of log z + psi(z+1/z), where psi is the digamma function.at n=44A222804
• A bisection of A222804.at n=22A222806
• Number of (n+2) X (5+2) 0..1 arrays with every 2 X 2 and 3 X 3 subblock diagonal maximum minus antidiagonal minimum nondecreasing horizontally and vertically.at n=9A253507
• Number of length-n 0..5 arrays with no repeated value greater than or equal to the previous repeated value.at n=5A269406
• T(n,k)=Number of length-n 0..k arrays with no repeated value greater than or equal to the previous repeated value.at n=50A269409
• Number of length-6 0..n arrays with no repeated value greater than or equal to the previous repeated value.at n=4A269412
• Excess of the number of even Motzkin n-paths (A107587) over the odd ones (A343386).at n=18A343773
• Expansion of e.g.f. exp(sqrt(2*x+1)-1)/(2-sqrt(2*x+1))^2.at n=8A373175