A341203 Number of ways to write n as an ordered sum of 6 nonzero decimal palindromes.

1, 6, 21, 56, 126, 252, 462, 792, 1287, 1996, 2973, 4272, 5942, 8022, 10536, 13488, 16857, 20592, 24622, 28836, 33108, 37298, 41262, 44862, 47976, 50508, 52398, 53612, 54192, 54186, 53688, 52818, 51708, 50492, 49296, 48228, 47383, 46788, 46497, 46506, 46773, 47268, 47948

Offset

6,2

Links

Alois P. Heinz, Table of n, a(n) for n = 6..10000

Mathematica

nmax = 48; CoefficientList[Series[Sum[Boole[PalindromeQ[k]] x^k, {k, 1, nmax}]^6, {x, 0, nmax}], x] // Drop[#, 6] &

Crossrefs

Cf. A002113, A136522, A319471, A341159, A341184, A341191, A341192, A341193, A341204, A341205, A341206, A341207.

Sequence in context: A120478 A008488 A023031 * A090581 A000389 A143980

Adjacent sequences: A341200 A341201 A341202 * A341204 A341205 A341206

Keyword

nonn,base

Author

Ilya Gutkovskiy, Feb 06 2021

Status

approved