A014257 - OEIS

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A014257

Product of digits of 2^n.

1

1, 2, 4, 8, 6, 6, 24, 16, 60, 10, 0, 0, 0, 144, 576, 2016, 2700, 0, 384, 5120, 0, 0, 0, 0, 24696, 21600, 0, 18816, 691200, 0, 0, 1032192, 11757312, 27993600, 6096384, 39191040, 64012032, 15240960, 0, 387072000, 0, 0, 0, 0, 0, 0, 0, 0, 0, 125971200, 0, 4180377600, 0, 0, 0

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OFFSET

0,2

LINKS

Table of n, a(n) for n=0..54.

MATHEMATICA

Array[ Times @@ IntegerDigits[ 2^# ]&, 100 ]

PROG

(PARI) a(n) = vecprod(digits(2^n)); \\ Michel Marcus, Nov 18 2019

CROSSREFS

Cf. A000079, A007377.

Sequence in context: A292808 A300813 A086354 * A247576 A339133 A246821

Adjacent sequences: A014254 A014255 A014256 * A014258 A014259 A014260

KEYWORD

nonn,base,easy

AUTHOR

N. J. A. Sloane

EXTENSIONS

More terms from Michel Marcus, Nov 18 2019

STATUS

approved