A067443 - OEIS

A067443

Smallest n-th power starting with 2.

2, 25, 27, 256, 243, 262144, 2187, 256, 262144, 282475249, 2048, 244140625, 2541865828329, 268435456, 205891132094649, 2821109907456, 232630513987207, 262144, 274877906944, 278218429446951548637196401, 2097152, 2384185791015625, 27368747340080916343

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,1

COMMENTS

Terms from Robert G. Wilson v.

LINKS

Table of n, a(n) for n=1..23.

MATHEMATICA

a = {}; Do[k = 1; While[First[IntegerDigits[k^n]] != 2, k++ ]; a = Append[a, k^n], {n, 1, 25}]; a (* Robert G. Wilson v *)

PROG

(Python)

def a(n):

r = 1

while str(r**n)[0] != '2': r += 1

return r**n

print([a(n) for n in range(1, 24)]) # Michael S. Branicky, Feb 25 2021

CROSSREFS

Cf. A067442.

Sequence in context: A317886 A054283 A041723 * A163497 A264118 A054292

Adjacent sequences: A067440 A067441 A067442 * A067444 A067445 A067446

KEYWORD

base,easy,nonn

AUTHOR

Amarnath Murthy, Feb 05 2002

STATUS

approved