58813

Appears in sequences

• Expansion of g.f. exp( Sum_{n>=1} (2^n+3^n)^2*x^n/n ).at n=4A174515
• T(n,k)=Number of (n+2)Xk 0..1 arrays with all rows having a nonnegative second derivative, and all and columns having a positive second derivative in a quadratic least squares fit, with one and two element arrays taken as having a zero second derivative.at n=37A223652
• Number of 4Xn 0..1 arrays with all rows having a nonnegative second derivative, and all and columns having a positive second derivative in a quadratic least squares fit, with one and two element arrays taken as having a zero second derivative.at n=7A223654
• Composites in base 10 that remain composite in exactly four bases b, 2 <= b <= 10, expansions interpreted as decimal numbers.at n=22A256354
• Numbers that can be represented in more than one way as p^2+p*q+q^2 with p and q primes, p<=q.at n=36A349987
• Semiprimes k such that k+4, k+6, k+9, k+10 and k+14 are also semiprimes.at n=16A360666
• Numbers k such that k + 4, k + 6, k + 9, k + 10, and k + 14 are all semiprimes, where 4, 6, 9, 10, 14 are the first 5 semiprimes.at n=40A365240
• G.f. A(x) satisfies A(x) = 1 + x^4*(1+x)^2*A(x)^3.at n=24A366592