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A082110 A symmetric square array of numbers, read by antidiagonals. +0
5
1, 1, 1, 1, 7, 1, 1, 15, 15, 1, 1, 25, 37, 25, 1, 1, 37, 67, 67, 37, 1, 1, 51, 105, 127, 105, 51, 1, 1, 67, 151, 205, 205, 151, 67, 1, 1, 85, 205, 301, 337, 301, 205, 85, 1, 1, 105, 267, 415, 501, 501, 415, 267, 105, 1, 1, 127, 337, 547, 697, 751, 697, 547, 337, 127, 1, 1 (list; table; graph; listen)
OFFSET

0,5

COMMENT

Rows include A082111, A082112. The main diagonal is A082113. The diagonal sums are A082114.

FORMULA

Square array defined by T(n, k)=(k^2n^2+5kn+1)

EXAMPLE

Rows begin

1 1 1 1 1 ...

1 7 15 25 37 ...

1 15 37 67 105 ...

1 25 67 127 205 ...

1 37 105 205 337 ...

CROSSREFS

Cf. A082105, A082046, A082043, A082039.

Adjacent sequences: A082107 A082108 A082109 this_sequence A082111 A082112 A082113

Sequence in context: A050179 A131065 A081580 this_sequence A141597 A119727 A046739

KEYWORD

easy,nonn,tabl

AUTHOR

Paul Barry (pbarry(AT)wit.ie), Apr 04 2003

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Last modified October 15 09:18 EDT 2008. Contains 145015 sequences.


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