A070564 Partial sums of A070563.

0, 1, 1, 1, 2, 2, 2, 3, 3, 3, 3, 3, 3, 4, 4, 4, 5, 5, 5, 6, 6, 6, 6, 6, 6, 7, 7, 7, 8, 8, 8, 9, 9, 9, 9, 9, 9, 10, 10, 10, 10, 10, 10, 11, 11, 11, 11, 11, 11, 11, 11, 11, 12, 12, 12, 12, 12, 12, 12, 12, 12, 13, 13, 13, 14, 14, 14, 15, 15, 15, 15, 15, 15, 16, 16

Offset: 0

Author

N. J. A. Sloane, May 07 2002

Keywords

• nonn

Links

• Amiram Eldar, Table of n, a(n) for n = 0..10000
• Pieter Moree and Herman J.J. te Riele, The hexagonal versus the square lattice, Math. Comp., Vol. 73, No. 245 (2004), 451-473.

Crossrefs

Cf. A000594, A070563.

Programs

Mathematica

Accumulate[Table[Boole[!Divisible[RamanujanTau[n], 3]], {n, 0 ,100}]] (* Amiram Eldar, Jan 10 2025 *)