24817

Appears in sequences

• Number of partitions in parts not of the form 23k, 23k+1 or 23k-1. Also number of partitions with no part of size 1 and differences between parts at distance 10 are greater than 1.at n=48A035989
• a(n) = Sum_{d|n} d*2^(d-1) for n > 0.at n=12A083413
• Centered 47-gonal numbers.at n=32A129428
• Let S denote the palindromes in the language {0,1,2,...,n-1}*; a(n) = number of words of length 4 in the language SS.at n=22A187277
• Number of 0..n arrays x(0..4) of 5 elements without any interior element greater than both neighbors.at n=8A200888
• Array: row n shows the coefficients of the characteristic polynomial of the n-th principal submatrix of the symmetric matrix A202875; by antidiagonals.at n=39A202877
• Number of (w,x,y,z) with all terms in {0,...,n} and 2w=max{w,x,y,z}-min{w,x,y,z}.at n=38A212757
• Composite squarefree numbers n such that p(i)-8 divides n+8, where p(i) are the prime factors of n.at n=17A225708
• Composite squarefree numbers n such that p-d(n) divides n+d(n), where p are the prime factors of n and d(n) the number of divisors of n.at n=18A228301
• 100-gonal numbers: a(n) = 98*n*(n-1)/2 + n.at n=23A261276
• a(n) = (1/24)*(n + 3)*(3*n^3 + 5*n^2 - 6*n + 16).at n=19A290061
• Solution of the complementary equation a(n) = 2*a(n-1) - a(n-3) + b(n), where a(0) = 1, a(1) = 2, a(2) = 3, b(0)= 4, b(1) = 5, b(2) = 6; b(3) = 7. See Comments.at n=16A305746
• Numbers m such that Stern polynomial B(m,x) has no irreducible polynomial factors that themselves are Stern polynomials. The initial a(1) = 1 is included by convention.at n=32A389918