23381

Appears in sequences

• Cubes written in base 9.at n=24A004639
• Denominators of continued fraction convergents to sqrt(952).at n=9A042843
• Numbers having four 5's in base 8.at n=17A043444
• Number of permutations satisfying -k<=p(i)-i<=r and p(i)-i not in I, i=1..n, with k=2, r=3, I={-1,1,2}.at n=32A080000
• Brilliant numbers k such that 2k+1 is also brilliant.at n=12A085649
• a(n) = (n^3 + 3*n - 2)/2.at n=35A132127
• G.f. is the polynomial (1-x^3) * (1-x^6) * (1-x^9) * (1-x^12) * (1-x^15) * (1-x^18) * (1-x^21) / (1-x)^7.at n=14A162595
• Positions of zeros in A163897.at n=23A165480
• 3^n times the expected value of the shortest run of 0's in a length n word on alphabet {0,1,2}.at n=9A209243
• Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 425", based on the 5-celled von Neumann neighborhood.at n=33A272091
• Sum T(n,k) of the entries in the k-th last cycles of all permutations of [n]; triangle T(n,k), n>=1, 1<=k<=n, read by rows.at n=23A286231
• a(n) = (1/3^n) * Sum_{k=0..n^3} ( (binomial(n^3, k) * 2^k) (mod 3^n) ).at n=35A376536
• Number of irreducible conic curves containing 6 points of a cyclic order n-torsion subgroup of an elliptic curve.at n=24A379920