29440

Appears in sequences

• Glaisher's function G(n) (18 squares version).at n=11A002609
• Dowling numbers: e.g.f.: exp(x + (exp(b*x) - 1)/b) with b=4.at n=6A003576
• Expansion of e.g.f. log(1+sin(x)/exp(x)).at n=7A009343
• Greatest number in row n of array T given by A027157.at n=11A027168
• Numbers which can be expressed as the product of a number and its reversal in at least two different ways.at n=21A066531
• Expansion of (1-x)/(1-2*x^2-2*x^3).at n=21A078023
• G.f. A(x) satisfies x = (1 + 4*A(x)) * A(A(x)).at n=8A088675
• Sign weighted matrices n X n:example {{2 w[2], w[0], w[1]}, {3 w[0], 2 w[1], w[2]}, {3 w[1], 3 w[2], 2 w[0]}} are made into monomials using w[n]=1 if n<>0, x if n==0. The coefficients of the monomials form a triangular sequence.at n=57A140326
• Number of binary strings of length n with equal numbers of 00001 and 10001 substrings.at n=16A164204
• Numbers of the form p^8*q*r where p, q, and r are distinct primes.at n=17A179747
• a(n) = 4*a(n-1) - 6*a(n-2), with a(0)=0, a(1)=1.at n=12A190965
• Numbers k such that sum of square of prime divisors of k equals sum of prime divisors of k+1.at n=7A228181
• a(n) = A000196(A277699(A277807(n))).at n=14A277806
• Decimal representation of the x-axis, from the origin to the right edge, of the n-th stage of growth of the two-dimensional cellular automaton defined by "Rule 205", based on the 5-celled von Neumann neighborhood.at n=14A279825
• Numbers that are the product of exactly 10 primes and are of the form prime(n) + prime(n + 1).at n=12A281927
• Decimal representation of the diagonal from the origin to the corner of the n-th stage of growth of the two-dimensional cellular automaton defined by "Rule 397", based on the 5-celled von Neumann neighborhood.at n=14A288011
• Even integers k such that lambda(sum of even divisors of k) = sum of odd divisors of k.at n=36A293356
• Number of nX3 0..1 arrays with every element equal to 0, 1, 3 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.at n=12A302630
• Practical numbers with a record gap to the next practical number.at n=12A330870
• Square array A(n,k), n >= 0, k >= 1, read by antidiagonals: A(n,k) = exp(-1/k) * Sum_{j>=0} (k*j + 1)^n / (k^j * j!).at n=51A334165