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A341193 Number of ways to write n as an ordered sum of 4 nonzero decimal palindromes. 9
1, 4, 10, 20, 35, 56, 84, 120, 165, 216, 274, 336, 399, 460, 516, 564, 601, 624, 636, 628, 609, 580, 544, 504, 463, 424, 390, 360, 345, 332, 324, 324, 327, 332, 338, 344, 350, 352, 356, 364, 361, 364, 370, 376, 382, 388, 394, 400, 402, 412, 418, 412, 418, 424, 430, 436, 442 (list; graph; refs; listen; history; text; internal format)
OFFSET

4,2

LINKS

Alois P. Heinz, Table of n, a(n) for n = 4..20000

MATHEMATICA

nmax = 60; CoefficientList[Series[Sum[Boole[PalindromeQ[k]] x^k, {k, 1, nmax}]^4, {x, 0, nmax}], x] // Drop[#, 4] &

CROSSREFS

Cf. A002113, A136522, A319469, A341157, A341191, A341192.

Sequence in context: A301244 A038409 A201722 * A090579 A276643 A000292

Adjacent sequences:  A341190 A341191 A341192 * A341194 A341195 A341196

KEYWORD

nonn,base

AUTHOR

Ilya Gutkovskiy, Feb 06 2021

STATUS

approved

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Last modified April 14 00:42 EDT 2021. Contains 342941 sequences. (Running on oeis4.)