A224778 - OEIS

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A224778

One half of the even numbers that are the sum of four nonzero squares.

1

2, 5, 6, 8, 9, 10, 11, 13, 14, 15, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79

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

OFFSET

1,1

COMMENTS

These are the even numbers of A000414 divided by 2.

LINKS

Table of n, a(n) for n=1..70.

FORMULA

a(n) is one half of the n-th even number of the sequence A000414.

CROSSREFS

Sequence in context: A228089 A126971 A175354 * A286727 A090946 A299417

Adjacent sequences: A224775 A224776 A224777 * A224779 A224780 A224781

KEYWORD

nonn

AUTHOR

Wolfdieter Lang, May 09 2013

STATUS

approved