25102

Appears in sequences

• Number of n-bead bracelets (turnover necklaces) of two colors with 10 red beads and n-10 black beads.at n=13A005515
• Cycle class sequence c(2n) (the number of true cycles of length 2n in which a certain node is included) for zeolite CLO = Cloverite starting with a T2 atom.at n=6A019002
• Number of partitions of n into parts not of the form 25k, 25k+2 or 25k-2. Also number of partitions with 1 part of size 1 and differences between parts at distance 11 are greater than 1.at n=44A036001
• Base-8 palindromes that start with 6.at n=26A043026
• Smallest integer k such that 2^n is the largest power of two that is contained in 2^k as a proper substring.at n=27A046300
• Number of symmetric nonnegative integer 7 X 7 matrices with sum of elements equal to 4*n, under action of dihedral group D_4.at n=10A054497
• Partial sums of A001158: Sum_{j=1..n} sigma_3(j).at n=16A064603
• a(n) = Sum_{i>=1} i^n*Fibonacci(i)/2^i.at n=4A103436
• Triangle read by rows: T(n,k) is number of paths from (0,0) to (3n,0) that stay in the first quadrant (but may touch the horizontal axis), consisting of steps u=(2,1), U=(1,2), or d=(1,-1) and have k triple descents (i.e., ddd's).at n=38A108443
• Denominators of an Egyptian fraction for 1/Sqrt[23] = 0.208514414...at n=2A144998
• Number of (n+1) X (n+1) -11..11 symmetric matrices with every 2 X 2 subblock having sum zero and two distinct values.at n=15A211710
• Composite squarefree numbers n such that p(i)-8 divides n+8, where p(i) are the prime factors of n.at n=18A225708
• 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 609", based on the 5-celled von Neumann neighborhood.at n=14A283286
• Numbers k such that 89*10^k - 9 is prime.at n=23A287685
• a(n) is the exponent of the least power of 2 such that the concatenated digits of the decimal expansion of 2^n are a proper substring of the concatenated digits of the decimal expansion of 2^a(n).at n=27A342575
• Number of integer partitions of n of whose permutations do not all have distinct runs.at n=38A351203
• A variant of A008336 based on polynomials over GF(2) (see Comments for precise definition).at n=21A369407