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A217532 Numbers n such that sum of 4th power of digits of n equals the sum of prime divisors of n. 1
210, 1210, 2100, 12100, 21000, 21021, 36522, 63141, 89195, 92029, 112132, 116010, 118461, 121000, 149851, 203013, 203202, 210000, 214456, 303142, 304341, 313230, 323723, 331401, 351760, 416213, 441532, 524371, 534656, 574915, 610171, 654560, 897648, 999643 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

n such that A055013 (n) = A008472(n).

LINKS

Table of n, a(n) for n=1..34.

EXAMPLE

210 =  2*3*5*7  is in the sequence because 2^4 + 1^4 + 0^4 = 2 + 3 + 5 + 7 = 17.

MATHEMATICA

Rest[Select[Range[1000000], Total[Transpose[FactorInteger[#]][[1]]]==Total[IntegerDigits[#]^4]&]]

CROSSREFS

Cf. A055013, A008472.

Sequence in context: A235248 A235241 A046302 * A289319 A157408 A333771

Adjacent sequences:  A217529 A217530 A217531 * A217533 A217534 A217535

KEYWORD

nonn,easy,base

AUTHOR

Michel Lagneau, Oct 05 2012

STATUS

approved

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Last modified October 28 17:59 EDT 2021. Contains 348329 sequences. (Running on oeis4.)