A065524 - OEIS

A065524

The (5^n)-th composite number.

4, 10, 38, 164, 760, 3634, 17653, 86542, 426510, 2109602, 10458654, 51938515, 258246036, 1285227649, 6400837884, 31896080698, 159013169263, 793026358830, 3956152086139, 19740921224246, 98526658283206, 491833651069513, 2455555405866035, 12261373736046802

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OFFSET

0,1

LINKS

Table of n, a(n) for n=0..23.

MATHEMATICA

Composite[n_Integer] := Block[ {k = n + PrimePi[n] + 1 }, While[ k != n + PrimePi[k] + 1, k = n + PrimePi[k] + 1]; Return[ k ]]; Table[ Composite[5^n], {n, 0, 18} ]

CROSSREFS

Sequence in context: A149199 A149200 A149201 * A024689 A320806 A149202

Adjacent sequences: A065521 A065522 A065523 * A065525 A065526 A065527

KEYWORD

nonn

AUTHOR

Robert G. Wilson v, Nov 27 2001

EXTENSIONS

a(19)-a(23) from Chai Wah Wu, Apr 21 2018

STATUS

approved