27703
domain: N
Appears in sequences
- Starting positions of strings of three 6's in the decimal expansion of Pi.at n=21A083625
- a(n) = 38*n^2 + 1.at n=27A158593
- a(n) = ceiling(A000931(n)/2).at n=41A173692
- Number of arrays of 4 integers in -n..n with sum zero and equal numbers of elements greater than zero and less than zero.at n=18A201812
- a(n) = (a(n-1) + a(n-3))/gcd(a(n-1), a(n-3)) with a(0) =2, a(1) = 3, a(2) = 5.at n=56A214331
- Composite numbers k such that k-1 divides 2^k-2.at n=27A330382