A249828 a(n+1) is the next smallest nontrivial cube beginning with a(n), initial term is 6.

6, 64, 6434856, 64348563687280925127256, 6434856368728092512725673603219352207940941512476919680996778471241599

Offset

1,1

Comments

a(6) is a 212-digit number. - Jon E. Schoenfield, Dec 05 2014

Links

Jon E. Schoenfield, Table of n, a(n) for n = 1..7

Prog

(Python)
def f(x):
..n = x
..s = 1
..while s < 10**7:
....if s % 10:
......S = str(s**3)
......if S.startswith(str(n)):
........print(s**3, end=', ')
........n = s**3
....s += 1
f(6)
(PARI) a(n)=k=n; s=1; while(s<10^7, if(s%10, if(s^3\(10^(#Str(s^3)-#Str(k)))==k, print1(s^3, ", "); k=s^3)); s++)
a(6)

Crossrefs

Cf. A249799, A249896.

Sequence in context: A333983 A087488 A249896 * A179879 A350946 A297516

Adjacent sequences: A249825 A249826 A249827 * A249829 A249830 A249831

Keyword

nonn,base

Author

Derek Orr, Dec 03 2014

Extensions

a(5) from Jon E. Schoenfield, Dec 05 2014

Status

approved