153216
domain: N
Appears in sequences
- Sum of divisors of those numbers n such that n and n+1 have the same sum of divisors.at n=23A053215
- Number of 1:2:sqrt(5) proportioned triangles on an (n+1) X (n+1) grid.at n=24A190099
- Triangle read by rows: T(n,k) = A059382(n)/(A059382(k)*A059382(n-k)).at n=39A238743
- Triangle read by rows: T(n,k) = A059382(n)/(A059382(k)*A059382(n-k)).at n=41A238743
- Decuple factorial, 10-factorial, n!10, n!!!!!!!!!!.at n=38A288327
- Numbers k = a * b, such that k' = a' * b' where k', a' and b' are the arithmetic derivatives of k, a and b.at n=25A294153
- Sequence lists numbers k > 1 such that k^3 == d(k) (mod sigma(k)), where d = A000005 and sigma = A000203.at n=13A323250