A226753 - OEIS

A226753

Numbers n such that sigma(n) + sigma(n+1) + sigma(n+2) = sigma(n+3) + sigma(n+4) + sigma(n+5).

52, 56, 2199, 17312, 92444, 31768040, 41159079, 52236776, 79563436, 683321810, 689969123, 757808252, 881421986, 910016369, 22184779055

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

OFFSET

1,1

COMMENTS

The sequence of corresponding sums begins: 272, 290, 10820, 86514, 473568, 162349956, 203060920, 258797664, 398693936, 3418531584, 3544794576, 3812186016, 4066082208, 4374966816.

LINKS

Table of n, a(n) for n=1..15.

EXAMPLE

Sigma(52) + sigma(53) + sigma(54) = 98 + 54 + 120 = 272.

Sigma(55) + sigma(56) + sigma(57) = 72 + 120 + 80 = 272.

So 52 is in the sequence.

CROSSREFS

Cf. A000203, A055574, A065900, A073500, A099632, A226361, A226475.

Sequence in context: A346455 A050422 A350232 * A260992 A095537 A095527

Adjacent sequences: A226750 A226751 A226752 * A226754 A226755 A226756

KEYWORD

nonn,more

AUTHOR

Alex Ratushnyak, Jun 16 2013

EXTENSIONS

a(15) from Giovanni Resta, Jun 17 2013

STATUS

approved