A178271 -id:A178271 - cp's OEIS frontend

A169806 Nonpalindromic numbers k such that k = R(k) + P(k) where R(k) is reversal(k) and P(k) is the product of the digits of k.

354253, 385863, 398573, 534235, 653936, 676356, 682566, 695276, 853638, 35369253, 35639453, 45469254, 45636454, 45839454, 53369235, 53639435, 54469245, 54636445, 54839445, 55769255, 56814665, 56941765, 59236195

Offset: 1

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Farideh Firoozbakht, May 23 2010

base
nonn

Number of terms below 10^8 is 29.
Obviously each palindromic number k that has at least one zero digit also has the property that k = R(k) + P(k), since R(k)=k and P(k)=0.
All other terms below 10^8 are 59871495, 65814656, 65941756, 95236159, 95871459 and 99429579.
354253 and 1655425561 are the first two prime terms of the sequence.

			354253 = 352453 + 3*5*4*2*5*3 = reversal(354253) + 3*5*4*2*5*3, so 354253 is a term.

Cf. A004086, A007954, A178271.

r[n_] := FromDigits[Reverse[IntegerDigits[n]]]; Do[
If[n > r[n] && n == r[n] + Apply[Times, IntegerDigits[n]],
Print[n]], {n, 59500000}]

cp's OEIS Frontend

A169806 Nonpalindromic numbers k such that k = R(k) + P(k) where R(k) is reversal(k) and P(k) is the product of the digits of k.

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