A168528 Numbers n such that there exists another number m with the property that all 9 pairs (n, m), (n, m+1), (n, m+2), (n+1, m), (n+1, m+1), (n+1, m+2), (n+2, m), (n+2, m+1), (n+2, m+2) are not relatively prime.

104, 164, 230, 284, 494, 594, 644, 650, 664, 740, 804, 824, 854, 944, 968, 986, 1000, 1034, 1064, 1104, 1274, 1308, 1406, 1434, 1442, 1448, 1462, 1494, 1598, 1614, 1728, 1748, 1784, 1884, 1924, 1988

Offset

1,1

Links

Table of n, a(n) for n=1..36.

Example

a(21)=1274 means there exists another number (1308) which all 9 pairs numbers (1274,1308),(1275,1308),(1276,1308),(1274,1309),(1275,1309),(1277,1309),(1274,1310),(1275,1310),(1276,1310) are not relatively prime.

Crossrefs

Sequence in context: A074228 A298505 A253693 * A259767 A234261 A260288

Adjacent sequences: A168525 A168526 A168527 * A168529 A168530 A168531

Keyword

easy,nonn

Author

Zhining Yang, Nov 28 2009

Status

approved