id:A046949 - OEIS Search Results

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Sizes of successive balls in D_4 lattice.

+0
3

1, 25, 49, 145, 169, 313, 409, 601, 625, 937, 1081, 1369, 1465, 1801, 1993, 2569, 2593, 3025, 3337, 3817, 3961, 4729, 5017, 5593, 5689, 6433, 6769, 7729, 7921, 8641, 9217, 9985, 10009, 11161, 11593, 12745, 13057, 13969, 14449, 15793 (list; graph; listen)

	OFFSET	`0,2`
	LINKS	`Index entries for sequences related to D_4 lattice`
	PROGRAM	`(PARI) B=1; bl=[ 1 ]; for (n=1, 200, t1=divisors(2n); t2=0; for (i=1, length(t1), if( t1[ i ]%4 <> 0, t2=t2+t1[ i ])); B=B+8t2; bl=concat(bl, B)); bl`
	CROSSREFS	`Partial sums of A004011.` `Sequence in context: A131706 A110015 A110586 this_sequence A137659 A020325 A108604` `Adjacent sequences: A046946 A046947 A046948 this_sequence A046950 A046951 A046952`
	KEYWORD	`nonn`
	AUTHOR	`N. J. A. Sloane (njas(AT)research.att.com).`

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Last modified November 24 23:16 EST 2009. Contains 167481 sequences.

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