30051
domain: N
Appears in sequences
- a(0)=1, a(1)=1, a(n) = 11*a(n/2) for even n, and a(n) = 10*a((n-1)/2) + a((n+1)/2) for odd n >= 3.at n=27A116525
- a(n) is the least exponent k greater than 1 such that prime(n)^k starts and ends in prime(n).at n=31A320775
- Numbers k that divide the k-th central Delannoy number.at n=41A372901
- Intersection of A392605 and A392611.at n=40A392606