A345043 a(n) = A344998(n) - A344999(n).

1, 2, 6, 1, 20, 0, 42, 0, 10, 22, 110, -16, 156, 60, 96, -1, 272, -15, 342, -12, 220, 184, 506, -12, 76, 270, 14, 0, 812, -492, 930, -2, 612, 490, 792, -38, 1332, 624, 880, -10, 1640, -660, 1806, 48, 132, 940, 2162, 56, 246, 63, 1560, 84, 2756, -36, 2128, -8, 1972, 1534, 3422, -1248, 3660, 1764, 330, -3, 3036, -996, 4422

Offset

1,2

Comments

Each term a(n) seems to be a multiple of A033879(n). Factor (quotient) is negative at least for 16, 32, 48, 64, 72, 80, 96, 112, 128, 144, 160, 176, 192, 200, 208, 216, 224, 240, 243, 256, 272, 288, 304, 320, 324, 336, 352, 368, 384, 392, 400, 416, 432, 448, 464, 480, 486, ...

Links

Table of n, a(n) for n=1..67.

Formula

a(n) = A344998(n) - A344999(n).

Crossrefs

Cf. A033879, A344998, A344999, A345003 (positions of zeros).

Sequence in context: A175353 A181307 A008855 * A181299 A181365 A221913

Adjacent sequences: A345040 A345041 A345042 * A345044 A345045 A345046

Keyword

sign

Author

Antti Karttunen, Jun 06 2021

Status

approved