

A070770


b + c + d where b >= c >= d >= 0 ordered by b then c then d.


3



0, 1, 2, 3, 2, 3, 4, 4, 5, 6, 3, 4, 5, 5, 6, 7, 6, 7, 8, 9, 4, 5, 6, 6, 7, 8, 7, 8, 9, 10, 8, 9, 10, 11, 12, 5, 6, 7, 7, 8, 9, 8, 9, 10, 11, 9, 10, 11, 12, 13, 10, 11, 12, 13, 14, 15, 6, 7, 8, 8, 9, 10, 9, 10, 11, 12, 10, 11, 12, 13, 14, 11, 12, 13, 14, 15, 16, 12, 13, 14, 15, 16, 17, 18, 7
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OFFSET

0,3


LINKS

Robert Israel, Table of n, a(n) for n = 0..10000


FORMULA

a(n) = A056556(n) + A056557(n) + A056558(n).


MAPLE

seq(seq(seq(b+c+d, d=0..c), c=0..b), b=0..10); # Robert Israel, Jun 21 2018


PROG

(PARI) for(x=0, 5, for(y=0, x, for(z=0, y, print1(x+y+z", ")))) \\ Charles R Greathouse IV, Sep 17 2015


CROSSREFS

Cf. A001477, A051162, A070771, A070772 for similar sequences with different numbers of terms summed.
Sequence in context: A224962 A173540 A336264 * A292599 A071487 A124071
Adjacent sequences: A070767 A070768 A070769 * A070771 A070772 A070773


KEYWORD

nonn,look


AUTHOR

Henry Bottomley, May 06 2002


STATUS

approved



