37185
domain: N
Appears in sequences
- a(n) is the concatenation of n and 5n.at n=36A019553
- Quotients k*(k+1)*(k+2) / (k+(k+1)+(k+2)) that are lucky numbers.at n=25A032792
- Number of partitions satisfying 0 < cn(1,5) + cn(4,5) + cn(2,5) and 0 < cn(1,5) + cn(4,5) + cn(3,5).at n=40A039902
- Triangle read by rows: T(n,k) = Sum_{j=0..k-1} T(n,j) + Sum_{j=1..n-k} T(n-j,k), with T(0,0)=1 and T(n,k) = 0 for k > n.at n=34A059450
- Square pyramorphic numbers: integers m such that the sum of the first m squares (A000330) ends in m.at n=28A093534
- a(-1)=0. a(n)=a(n-1)^2-2^n.at n=6A168319
- a(n) = a(n-1) + 3*a(n-2) + 3*a(n-3) + a(n-4), where a(0) = a(1) = a(2) = a(3) = 1.at n=13A275277