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A072462 Sigma(n) == 3 mod 4. 4
2, 4, 8, 16, 18, 25, 32, 36, 64, 72, 98, 128, 144, 162, 169, 196, 225, 242, 256, 288, 289, 324, 392, 484, 512, 576, 648, 722, 784, 841, 882, 968, 1024, 1058, 1152, 1225, 1250, 1296, 1369, 1444, 1458, 1521, 1568, 1681, 1764, 1922, 1936, 2025, 2048, 2116, 2178 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..51.

PROG

(PARI) isok(n) = ((sigma(n) % 4) == 3); \\ Michel Marcus, Dec 19 2013

CROSSREFS

Cf. A000203, A028982, A072461.

Sequence in context: A127066 A154362 A226221 * A088827 A316900 A076057

Adjacent sequences:  A072459 A072460 A072461 * A072463 A072464 A072465

KEYWORD

nonn

AUTHOR

Labos Elemer, Jun 19 2002

EXTENSIONS

Name edited by Michel Marcus, Dec 19 2013

STATUS

approved

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Last modified March 22 17:25 EDT 2019. Contains 321422 sequences. (Running on oeis4.)