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A356863
Numbers that are the product of two palindromes in two or more ways and are the concatenation of two palindromes, with all the palindromes having the same number of decimal digits.
0
12, 16, 18, 24, 36, 113131311886868688, 153535351846464648, 182919281817080718, 183838381816161618, 185676581814323418, 192919291807080708, 193838391806161608, 283919382716080617, 293656392403040304, 293919392706080607, 365838563634161436, 385838583614161416, 387676783612323216, 567838765432161234, 587838785412161214
OFFSET
1,1
COMMENTS
Numbers in A355148 with more than 1 decomposition.
EXAMPLE
12 = 3*4 = 2*6.
16 = 4*4 = 2*8.
18 = 2*9 = 3*6.
24 = 4*6 = 3*8.
36 = 4*9 = 6*6.
113131311886868688 = 279747972*404404404 = 254545452*444444444 = 252252252*448484844.
153535351846464648 = 189828981*808808808 = 172727271*888888888.
CROSSREFS
Sequence in context: A043544 A097620 A335222 * A112548 A032620 A224302
KEYWORD
nonn,base
AUTHOR
Chai Wah Wu, Sep 01 2022
STATUS
approved