id:A082046 - OEIS Search Results

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A082046

A symmetric square array of numbers, read by antidiagonals.

+0
6

1, 1, 1, 1, 5, 1, 1, 11, 11, 1, 1, 19, 29, 19, 1, 1, 29, 55, 55, 29, 1, 1, 41, 89, 109, 89, 41, 1, 1, 55, 131, 181, 181, 131, 55, 1, 1, 71, 181, 271, 305, 271, 181, 71, 1, 1, 89, 239, 379, 461, 461, 379, 239, 89, 1, 1, 109, 305, 505, 649, 701, 649, 505, 305, 109, 1, 1, 131, 379 (list; table; graph; listen)

	OFFSET	`0,5`
	FORMULA	`Square array defined by T(n, k)=(k^2n^2+3kn+1)`
	EXAMPLE	`Rows start` `1 1 1 1 1 ...` `1 5 11 19 29 ...` `1 11 29 55 89 ...` `1 19 55 109 181 ...` `1 29 89 181 305 ...`
	CROSSREFS	`Rows include A028387, A082108, A069131. Main diagonal is A057721. Other diagonals include A072025. Diagonal sums (row sums if viewed as number triangle) are A082047.` `Cf. A082039, A082043, A082105.` `Sequence in context: A131061 A157169 A081578 this_sequence A132787 A119307 A146954` `Adjacent sequences: A082043 A082044 A082045 this_sequence A082047 A082048 A082049`
	KEYWORD	`easy,nonn,tabl`
	AUTHOR	`Paul Barry (pbarry(AT)wit.ie), Apr 03 2003`

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Last modified November 29 12:46 EST 2009. Contains 167659 sequences.

AT&T Labs Research