26886
domain: N
Appears in sequences
- Self-convolution of composite numbers.at n=37A023648
- Number of rectangular standard Young tableaux with n cells.at n=15A067228
- Barely abundant numbers: abundant n such that sigma(n)/n < sigma(m)/m for all abundant numbers m<n, sigma(n) being the sum of the divisors of n.at n=16A071927
- Starting positions of strings of three 8's in the decimal expansion of Pi.at n=25A083637
- a(n) = integer nearest Pi*a(n-1), where a(0) = 1.at n=9A095716
- Indices of primes occurring in A030284.at n=34A107365
- Indices of primes with digit product = 3.at n=11A135048
- a(n) = floor((2^n)/(2n-1)).at n=19A191631
- a(n) = floor((-1 + 4^n)/(-1 + 4*n)).at n=9A191640
- E.g.f. satisfies: A(x) = x/(1 - sin(A(x))).at n=5A214222
- Number of partitions p of n including ceiling(mean(p)) as a part.at n=42A241336
- Squarefree numbers n such that n is divisible by the product of digits of prime(n).at n=13A273402
- Expansion of Product_{k>=1} 1/(1 - k*x^(k^2)).at n=49A285245
- E.g.f.: exp(2 * (exp(x) - 1 - x - x^2 / 2 - x^3 / 6 - x^4 / 24)).at n=14A339027
- Number of knight paths from opposite corners of an n X n matrix, using only turns that lower Manhattan distance.at n=11A367558