OFFSET
1,2
LINKS
Alois P. Heinz, Table of n, a(n) for n = 1..10000
David A. Corneth, PARI program
EXAMPLE
18192 is a term because the sum of its digits is 1+8+1+9+2 = 21, the product of its digits is 1*8*1*9*2 = 144 and both 21 and 144 are Fibonacci numbers.
MATHEMATICA
isFibonacci[x_]:=MemberQ[Array[Fibonacci, 2x], x]; DeleteCases[ParallelTable[If[And[isFibonacci[Times@@IntegerDigits[n]], isFibonacci[Total[IntegerDigits[n]]]], n, a], {n, 1, 15000}], a] (* J.W.L. (Jan) Eerland, Jan 03 2024 *)
PROG
(PARI) isfib(n) = my(k=n^2); k+=(k+1)<<2; issquare(k) || issquare(k-8); \\ A000045
isok(k) = my(d=digits(k)); vecmin(d) && isfib(vecsum(d)) && isfib(vecprod(d)); \\ Michel Marcus, Jan 03 2024
(PARI) \\ See PARI program in links
CROSSREFS
KEYWORD
base,nonn
AUTHOR
Luc Stevens (lms022(AT)yahoo.com), Apr 13 2006
EXTENSIONS
a(45) from J.W.L. (Jan) Eerland, Jan 03 2024
Name clarified by Michel Marcus, Jan 03 2024
STATUS
approved