22248

Appears in sequences

• Sum of 11 positive 9th powers.at n=17A004800
• Numbers with at least two 3s in their prime signature.at n=53A109399
• Numbers k such that k + sigma(k) and k + phi(k) are palindromes.at n=8A115900
• a(n) is the number k such that 2^(2k+1)-1 = A000668(n+1).at n=25A146768
• The dimension of the space of invariant tensors in the n-th tensor power of the adjoint representation of the exceptional Lie algebra F4.at n=9A179685
• Numbers of the form p^3*q^3*r where p, q, and r are prime.at n=34A179688
• G.f.: Product_{k>=1} (1+x^k)^(3*k+1).at n=10A255836
• 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 225", based on the 5-celled von Neumann neighborhood.at n=17A279991
• E.g.f. satisfies: A(x) = exp( 1/A(x) * Integral A(x)^(8/3) dx ).at n=5A281186
• Numbers m > 0 that have a divisor d > 1 with binomial(m+d, d) == 1 mod m.at n=39A290040
• Irregular table read by rows: Take a nonagon with all diagonals drawn, as in A332421. Then T(n,k) = number of k-sided polygons in that figure for k >= 3.at n=19A332427
• Number of 3 X 3 matrices with unit determinant and positive integer entries whose sum is n.at n=30A361082
• Square array A(n,k), n >= 0, k >= 0, read by antidiagonals downwards, where column k is the expansion of B(x)^k, where B(x) is the g.f. of A381570.at n=33A381569