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A064043
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Number of length 3 walks on an n-dimensional hypercubic lattice starting at the origin and staying in the nonnegative part.
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5
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0, 3, 18, 51, 108, 195, 318, 483, 696, 963, 1290, 1683, 2148, 2691, 3318, 4035, 4848, 5763, 6786, 7923, 9180, 10563, 12078, 13731, 15528, 17475, 19578, 21843, 24276, 26883, 29670, 32643, 35808, 39171, 42738, 46515, 50508, 54723, 59166, 63843
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OFFSET
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0,2
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LINKS
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FORMULA
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MAPLE
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MATHEMATICA
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Table[n*(n^2 + 3n -1), {n, 0, 50}] (* G. C. Greubel, Jul 20 2017 *)
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PROG
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(PARI) { for (n=0, 1000, write("b064043.txt", n, " ", n*(n^2 + 3*n - 1)) ) } \\ Harry J. Smith, Sep 06 2009
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CROSSREFS
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KEYWORD
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nonn,easy
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AUTHOR
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STATUS
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approved
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