A297192 Left-hand half of triangle A297191.

1, 1, 3, 1, 7, 13, 1, 11, 41, 63, 1, 15, 85, 231, 321, 1, 19, 145, 575, 1289, 1683, 1, 23, 221, 1159, 3649, 7183, 8989, 1, 27, 313, 2047, 8361, 22363, 40081, 48639, 1, 31, 421, 3303, 16641, 56695, 134245, 224143, 265729, 1, 35, 545, 4991, 29961, 124515, 369305

Offset

0,3

Links

Rémy Sigrist, Rows n = 0..100 of triangle, flattened

Rémy Sigrist, PARI program for A297192

Prog

(PARI) See Links section.

Crossrefs

Cf. A008288, A297191.

Sequence in context: A249401 A196845 A263446 * A218592 A113647 A370381

Adjacent sequences: A297189 A297190 A297191 * A297193 A297194 A297195

Keyword

nonn,tabl,easy

Author

N. J. A. Sloane, Jan 10 2018

Extensions

More terms from Rémy Sigrist, Jan 19 2018

Status

approved