30965760

Appears in sequences

• Triangle whose (i,j)-th entry is binomial(i,j)*6^(i-j)*8^j.at n=32A038262
• Triangle whose (i,j)-th entry is binomial(i,j)*8^(i-j)*6^j.at n=31A038284
• Denominators of coefficients in the formal power series a(x) such that a(a(x)) = exp(x) - 1.at n=9A052105
• a(n) = 4^(n-1) * n! * Catalan(n-1) for n > 0, with a(0) = 0.at n=6A052734
• A simple context-free grammar in a labeled universe: labeled version of A052708.at n=8A052738
• Denominators in the series for Bessel function J4(x).at n=3A061403
• Analog of A095236 when the phones are arranged in a circle.at n=15A095239
• Terms of A110142 at positions p(n)+1, where p(n) = A000041(n) is the number of partitions of n; a(n) = A110142(p(n)+1) for n>=1, with a(0) = 1.at n=18A110144
• Product of the digital sums of n for all the bases 2 to n (a 'digital-sum factorial').at n=15A131384
• The decomposition of a certain labeled universe (A052584), triangle read by rows.at n=42A159749
• Triangle T(n, k) = n!*q^k/(n-k)! if floor(n/2) > k-1 otherwise n!*q^(n-k)/k!, with q = 4, read by rows.at n=60A174378
• Triangle read by rows. Number of invertible linear operators T on an n-dimensional vector space over GF(2) such that T(U) = U for some given k-dimensional subspace U.at n=23A302346
• Triangle read by rows. Number of invertible linear operators T on an n-dimensional vector space over GF(2) such that T(U) = U for some given k-dimensional subspace U.at n=25A302346
• Numbers where A349258 reaches a record value.at n=16A349259
• a(n) is the least number k such that A349258(k) = n.at n=20A349260
• A variant of payphone permutations: given a circular booth with n payphones, a(n) is the number ways for n people to choose the payphones in order, where each person chooses an unoccupied payphone such that the closest occupied payphone is as distant as possible.at n=15A361296
• a(n) = Product_{b=2..n} b^gamma(n, b) where gamma(n, b) = Sum_{i>=1} floor(n/b^i).at n=8A363838
• Expansion of e.g.f. 1 / (1 + x^2 * log(1 - x))^2.at n=10A375639
• The least number k that is not n-free whose sum of n-free divisors is larger than 2*k.at n=13A387154