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A341204
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Number of ways to write n as an ordered sum of 7 nonzero decimal palindromes.
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6
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1, 7, 28, 84, 210, 462, 924, 1716, 3003, 4998, 7966, 12222, 18123, 26054, 36408, 49560, 65835, 85470, 108591, 135163, 164976, 197632, 232547, 268968, 306005, 342678, 377979, 410914, 440630, 466417, 487788, 504511, 516621, 524412, 528409, 529320, 528003, 525308, 522144
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OFFSET
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7,2
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LINKS
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MATHEMATICA
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nmax = 45; CoefficientList[Series[Sum[Boole[PalindromeQ[k]] x^k, {k, 1, nmax}]^7, {x, 0, nmax}], x] // Drop[#, 7] &
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CROSSREFS
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Cf. A002113, A136522, A319472, A341165, A341184, A341191, A341192, A341193, A341203, A341205, A341206, A341207.
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KEYWORD
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nonn,base
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AUTHOR
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STATUS
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approved
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