46060

Appears in sequences

• a(n) = floor(C(n,4)/5).at n=50A011795
• a(n) = a(n-1) + a(m) for n >= 4, where m = 2*n - 2 - 2^(p+1) and p is the unique integer such that 2^p < n - 1 <= 2^(p+1), starting with a(1) = 1, a(2) = 2, and a(3) = 4.at n=38A050055
• Number of 10-ary trees.at n=5A059968
• Duplicate of A059968.at n=5A062744
• Numbers which can be expressed as the product of a number and its reversal in at least two different ways.at n=29A066531
• a(n) = (2*n^3 + 5*n^2 + 7*n)/2.at n=34A162264
• a(n) = binomial(5*(n+1),4)/5, with n >= 0.at n=9A234043
• Number of ways to write n as an ordered sum of 10 primes (counting 1 as a prime).at n=11A341989
• a(n) = number of k-tuples (u(1), u(2), ..., u(k)) with 1 <= u(1) < u(2) < ... < u(k) <= n such that u(i) - u(i-1) <= 4 for i = 2,...,k.at n=15A356620
• Numbers k such that k + A067666(k) is a square.at n=39A386257