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A109126
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Column 8 of array illustrated in A089574 and related to A034261.
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7
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18, 207, 1198, 4825, 15448, 42168, 102297, 226530, 466357, 904352, 1668083, 2948502, 5023797, 8289819, 13298336, 20804513, 31825172, 47709549, 70224436, 101655775, 144928958, 203750282, 282772211, 387785308, 525939919, 706000918, 938639057, 1236762708, 1615894035, 2094593893
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listen;
history;
text;
internal format)
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OFFSET
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0,1
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LINKS
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Index entries for linear recurrences with constant coefficients, signature (10,-45,120,-210,252,-210,120,-45,10,-1).
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FORMULA
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G.f. ( 18+27*x -62*x^2 +48*x^4 -13*x^5 -27*x^6 +24*x^7 -8*x^8 +x^9 ) / (x-1)^10 . - R. J. Mathar, Aug 28 2018
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EXAMPLE
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The associated partitions begin (for n = 14, 15, 16, ...
................1.......5.......14
................3.......18......60
........3.......18......60......150
3.......18......60......150.....315
................6.......42......162
........12......84......324.....924
4.......32......132.....392.....952
6.......42......162.....462.....1092
................10......80......350
........30......240.....1050....3360
5.......50......245.....840.....2310
................15......135.....660
........20......200.....1040....3840
................21......210.....1134
................1.......17......125
therefore this sequence begins
18 207 1198 4825 15448 ...
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CROSSREFS
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Cf. A105552, A000330 (column 2), A086602 (column 3), A089574 (column 4), A107600 (column 5), A107601 (column 6), A109125 (column 7), A109820 (column 9), A108538 (column 10), A109821 (column 11), A110553 (column 12), A110624 (column 13).
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KEYWORD
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easy,nonn
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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