25623

Appears in sequences

• Erroneous version of A223911: Tiered orders on n nodes.at n=5A006860
• Number of partitions of n into parts not of the form 23k, 23k+7 or 23k-7. Also number of partitions with at most 6 parts of size 1 and differences between parts at distance 10 are greater than 1.at n=39A035995
• Number of 6 X 6 binary matrices with n ones, with no zero rows or columns, up to row and column permutation.at n=13A056037
• Expansion of (1+x^4*C^2)*C^4, where C = (1-(1-4*x)^(1/2))/(2*x) is g.f. for Catalan numbers, A000108.at n=8A071749
• Numbers n such that (n+j) mod (2+j) = 1 for j from 0 to 5 and (n+6) mod 8 <> 1.at n=30A096024
• Second (k=2) triangle of numbers related to totally asymmetric exclusion process (case alpha=1, beta=1).at n=51A115127
• Partial sums of A064061.at n=4A115133
• Least k such that k*(2^p-1)*(k*(2^p-1)-1)+1 is prime, where 2^p-1 runs through the Mersenne primes.at n=23A137907
• Number of n X n binary arrays symmetric about main diagonal with all ones connected only in a 110-111-101 pattern in any orientation.at n=10A146259
• Number of n X n binary arrays symmetric about the diagonal and under 90 degree rotation with all ones connected only in a 110-111-101 pattern in any orientation.at n=22A146261
• A121153 \ A005836.at n=12A170830
• Number of tiered orders on n nodes (corrected version of A006860).at n=6A223911
• Expansion of 1/(1 - x^4 - x^5 - x^6 - x^7 - x^8 + x^12).at n=43A225501
• The 180-degree spoke (or ray) of a hexagonal spiral of Ulam.at n=46A244806
• Ulam numbers k such that k/3 is also an Ulam number.at n=36A287212
• a(n) = Sum_{d|n} d^3*A000593(n/d).at n=27A288419
• Numbers k such that at least 7 of k, k+1, ..., k+9 are divisible by their least prime factor squared.at n=3A328817
• The smallest of 3 consecutive integers such that the first is divisible by the square of a prime, the second is divisible by the cube of a prime, and the third is divisible by the fourth power of a prime.at n=16A349952
• Starts of runs of 3 consecutive integers that are divisible by the cube of their least prime factor.at n=2A365868
• Numbers k for which sigma(k - x) + sigma(k + x) = 8*k has at least one nonnegative solution.at n=3A384841