A174891 Row indices for nonzero elements in first column of A174888.

1, 4, 6, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 22, 24, 25, 26, 27, 28, 32, 33, 34, 35, 36, 38, 39, 40, 44, 45, 46, 48, 49, 50, 51, 52, 54, 55, 56, 57, 58, 60, 62, 63, 64, 65, 68, 69, 72, 74, 75, 76, 77

Offset: 1

Author

Mats Granvik, Apr 01 2010

Keywords

• nonn

Comments

Compare with nonprimes A018252. 30 is not a member of this sequence. Neither is 42.

Crossrefs

Cf. A174889, A174888, A018252.