A096124
a(n) is the exponent of 5 in x = 2^m*5^n, where x = b(n)-b(n-1) and b(n) and b(n-1) are consecutive terms in A050649.
Original entry on oeis.org
1, 4, 11, 27, 72
Offset: 2
a(3) = 4: b(3)-b(2) = 2512-12 = 2500; 2500 = 2^2*5^4, hence a(3)=4.
A096122
a(n) is the exponent of 2 in x = 2^m*5^n, where x = b(n)-b(n-1) and b(n) and b(n-1) are consecutive terms in A050649.
Original entry on oeis.org
1, 2, 4, 17, 62
Offset: 2
a(3) = 2: b(3)-b(2) = 2512-12 = 2500; 2500 = 2^2*5^4, hence a(3)=2.
A050648
a(n+1) is next smallest cube ending with a(n), initial term is 8.
Original entry on oeis.org
8, 1728, 15851081728, 476841757827289415851081728, 931322574615480750806365966798663150842303643476841757827289415851081728
Offset: 1
A050643
a(n+1)^3 is next smallest nontrivial cube containing a(n)^3 as a substring, initial term is 8.
Original entry on oeis.org
2, 12, 557, 12345792
Offset: 1
Showing 1-4 of 4 results.
Comments