A295338 Number of points of the outer discrete Theodorus spiral on sheet S_n, n >= 1. First differences of A072895.

17, 37, 56, 76, 95, 115, 136, 154, 175, 194, 214, 234, 254, 273, 293, 313, 332, 352, 372, 392, 411, 432, 450, 471, 490, 511, 529, 550, 569, 590, 608, 629, 648, 668, 688, 708, 727, 747, 767, 786, 806, 826, 846, 865, 885

Offset

1,1

Comments

The punctured sheets S_n start here with n=1: S_n := rho*exp(i*phi), rho > 0, 2*Pi*(n-1) <= phi < 2*Pi*n.

For details and references see A072895.

Links

Table of n, a(n) for n=1..45.

Formula

a(n) = b(n+1) - b(n), n >= 1, with b(n) = A072895(n), and a(1) = 17.

Crossrefs

Cf. A072895.

Sequence in context: A165493 A339531 A363040 * A059425 A341937 A225077

Adjacent sequences: A295335 A295336 A295337 * A295339 A295340 A295341

Keyword

nonn

Author

Wolfdieter Lang, Dec 01 2017

Status

approved