A084935 - OEIS

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A084935

Diagonal sums of the array T in A084934.

1

0, 1, 2, 5, 7, 11, 15, 21, 25, 32, 39, 48, 54, 65, 73, 86, 94, 109, 119, 134, 145, 164, 176, 194, 208, 228, 243, 265, 282, 305, 321, 348, 366, 392, 411, 440, 460, 491, 513, 545, 566, 599, 624, 660, 683, 721, 747, 785, 812, 852, 881, 921, 950, 995, 1025, 1070, 1101

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,3

LINKS

Table of n, a(n) for n=1..57.

EXAMPLE

The northwest corner of T includes

0 1 1 2

0 1 2

0 1

0,

from which the first four diagonals sums are 0,1,2,5.

CROSSREFS

Sequence in context: A184857 A032616 A006066 * A239072 A317242 A217302

Adjacent sequences: A084932 A084933 A084934 * A084936 A084937 A084938

KEYWORD

nonn

AUTHOR

Clark Kimberling, Jun 12 2003

STATUS

approved